Improve bug filing workflow

.github/ISSUE_TEMPLATE/BUG_REPORT.yml

@@ -0,0 +1,18 @@
+name: Bug Report
+description: Something isn't working as expected
+labels: [bug]
+body:
+ - type: textarea
+   id: description
+   attributes:
+     label: Description
+     description: |
+       A short description of the incorrect behavior.
+       If you think this issue has been recently introduced and did not occur in an
+       earlier version, please note that. If possible, include the last version that
+       the behavior was correct in addition to your current version.
+ - type: textarea
+   id: steps-to-reproduce
+   attributes:
+     label: Steps to Reproduce
+     description: Replace this paragraph with an explanation of how to reproduce the incorrect behavior.

.github/ISSUE_TEMPLATE/FEATURE_REQUEST.yml

@@ -0,0 +1,13 @@
+name: Feature Request
+description: A suggestion for a new feature
+labels: [enhancement]
+body:
+ - type: textarea
+   id: description
+   attributes:
+     label: Description
+     description: |
+       A description of your proposed feature.
+       Examples that show what's missing, or what new capabilities will be possible, are very helpful!
+       If this feature unlocks new use-cases please describe them.
+       Provide links to existing issues or external references/discussions, if appropriate.

.github/ISSUE_TEMPLATE/PARSER_BUG.yml

@@ -0,0 +1,37 @@
+name: SwiftParser Bug
+description: A bug in the new Swift parser
+labels: [bug, SwiftParser]
+body:
+ - type: markdown
+   attributes:
+     value: Thanks for taking the time to fill out this bug report! If you could take the time to reduce the issue as described in [FilingBugReports.md](https://github.com/apple/swift-syntax/blob/main/Sources/SwiftParser/SwiftParser.docc/FilingBugReports.md), we would really appreciate that.
+ - type: dropdown
+   id: issue-type
+   attributes:
+     label: Issue Kind
+     description: What kind of issue is this? See [FilingBugReports.md](https://github.com/apple/swift-syntax/blob/main/Sources/SwiftParser/SwiftParser.docc/FilingBugReports.md) for more details.
+     options:
+       - Round-Trip Failure
+       - Parser Crash
+       - Parse of Valid Source Failed
+       - Parse of Valid Source Produced Invalid Syntax Tree
+       - Bad Diagnostic Produced
+       - Other
+       - I Don’t Know
+ - type: textarea
+   id: source
+   attributes:
+     label: Source Code
+     description: The source code that, when fed into the parser, produces the bug.
+     value: |
+       ```swift
+       ```
+ - type: textarea
+   id: description
+   attributes:
+     label: Description
+     description: |
+       Any additional information you can provide for this issue, like
+        - What did you expect to happen?
+        - Has this issue started occurring recently?
+        - If it’s a crash, the stack trace.

.github/ISSUE_TEMPLATE/config.yml

@@ -6,12 +6,6 @@
  # See https://swift.org/LICENSE.txt for license information
  # See https://swift.org/CONTRIBUTORS.txt for Swift project authors
 
- # This is set to `false` to encourage users to use the provided templates instead
- # of beginning with a blank one.
- #
- # For details, see: https://docs.github.com/communities/using-templates-to-encourage-useful-issues-and-pull-requests/configuring-issue-templates-for-your-repository#configuring-the-template-chooser
- blank_issues_enabled: false
-
  contact_links:
    - name: Discussion Forum
      url: https://forums.swift.org/tags/c/development/tooling/39/swift-syntax