chore(css): Copy fonts from sentry (#6784)

Also fixes a bad import of fonts in type.scss

Author: evanpurkhiser

src/css/_includes/type.scss

@@ -1,24 +1,3 @@
-@font-face {
-  font-family: "Rubik";
-  src: asset-url("Rubik-Medium.ttf") format("truetype");
-  font-weight: 500;
-  font-style: normal;
-}
-
-@font-face {
-  font-family: "Rubik";
-  src: asset-url("Rubik-Italic.ttf") format("truetype");
-  font-weight: 400;
-  font-style: italic;
-}
-
-@font-face {
-  font-family: "Rubik";
-  src: asset-url("Rubik-Regular.ttf") format("truetype");
-  font-weight: 400;
-  font-style: normal;
-}
-
 .prose {
   h1,
   h2,

src/fonts/OFL.txt

@@ -0,0 +1,97 @@
+Copyright (c) <dates>, <Copyright Holder> (<URL|email>),
+with Reserved Font Name <Reserved Font Name>.
+Copyright (c) <dates>, <additional Copyright Holder> (<URL|email>),
+with Reserved Font Name <additional Reserved Font Name>.
+Copyright (c) <dates>, <additional Copyright Holder> (<URL|email>).
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded,
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

src/fonts/README.md

@@ -0,0 +1,30 @@
+# Notes
+
+The fonts in this folder have been optimized for web rendering. There are two notable modifications: vertical metrics and file size. Before making any changes to these files, ensure that the metrics are correct and the files are properly minimized.
+
+## Vertical metrics
+
+For historical reasons, font files include three different sets of metrics (`win`, `typo`, and `hhea`). These metrics have been modified to standardize rendering across operating systems and browsers.
+
+The modified metrics are:
+
+- `win` ascent: 840
+- `win` descent: 250
+- `typo` ascent: 840
+- `typo` descent: -250
+- `hhea` ascent: 935
+- `hhea` descent: -230
+
+## File size
+
+These files have been reprocessed using [FontSquirrel's Webfont Generator](https://www.fontsquirrel.com/tools/webfont-generator) to reduce their size. Note that the default Optimal option will remove certain useful font features and settings. Before processing, select the Expert option, and change the following:
+
+- **Vertical metrics:** no adjustment
+- **Opentype features:** keep all features
+- **Subsetting:** custom subsetting – read more below
+
+### Subsetting
+
+Subsetting narrows the list of glyphs (characters) included in the exported font files. We split our fonts into files with different glyph sets, each defined by a [unicode range](https://developer.mozilla.org/en-US/docs/Web/CSS/@font-face/unicode-range). This way, we can serve only the files with the glyphs that the user needs. If the page contains only latin characters, then the browser will only download the file with latin glyphs (e.g. `/rubik-regular-latin.woff2`). But if the page also has cyrillic text, then the browser will additionally download the file with cyrillic glyphs (e.g. `/rubik-regular-cyrillic.woff2`). This split reduces the total font loading time, since only the relevant glyph sets are downloaded.
+
+We support four glyph sets: `latin`, `latin-ext`, `cyrillic`, and `cyrillic-ext`. The unicode ranges for each of these sets can be found in [Google Fonts' Rubik stylesheet](https://fonts.googleapis.com/css2?family=Rubik&display=swap). In FontSquirrel's Webfont Generator, copy and paste these ranges into Subsetting -> Custom Subsetting -> Unicode Ranges. Once everything has been exported, check that each file contains the correct glyphs using [FontDrop](https://fontdrop.info/).