Update branding for Blazor packages and update baseline

[JunTaoLuo]

Addresses parts of https://github.com/aspnet/AspNetCore-Internal/issues/3417.

From local builds I see that Blazor packages are built with non-finalized versions. As a side-effect and non-Blazor packages are built with final versions but I think this is fine.

I also checked the nuspec of the Microsoft.AspNetCore.Blazor package and it looks correct to me:

<?xml version="1.0" encoding="utf-8"?>
<package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
  <metadata>
    <id>Microsoft.AspNetCore.Blazor</id>
    <version>3.2.0-dev</version>
    <authors>Microsoft</authors>
    <owners>Microsoft</owners>
    <requireLicenseAcceptance>true</requireLicenseAcceptance>
    <license type="expression">Apache-2.0</license>
    <licenseUrl>https://licenses.nuget.org/Apache-2.0</licenseUrl>
    <icon>Icon.png</icon>
    <projectUrl>https://asp.net/</projectUrl>
    <description>Build client-side single-page applications (SPAs) with Blazor running under WebAssembly.

This package was built from the source code at https://github.com/aspnet/AspNetCore/tree/d6c88a36ffe89614be26bf846d64791b9958406b</description>
    <copyright>© Microsoft Corporation. All rights reserved.</copyright>
    <tags>aspnetcore components</tags>
    <serviceable>true</serviceable>
    <repository type="git" url="https://github.com/aspnet/AspNetCore" commit="d6c88a36ffe89614be26bf846d64791b9958406b" />
    <dependencies>
      <group targetFramework=".NETStandard2.1">
        <dependency id="Microsoft.AspNetCore.Components.Web" version="3.1.0" exclude="Build,Analyzers" />
        <dependency id="Microsoft.Extensions.Options" version="3.1.0" exclude="Build,Analyzers" />
        <dependency id="Mono.WebAssembly.Interop" version="3.1.0-preview4.19568.3" exclude="Build,Analyzers" />
      </group>
    </dependencies>
  </metadata>
</package>

It'll be good to have some more eyes on the packages produced, especially the ones we plan on shipping from this branch @javiercn

[JunTaoLuo]

This way, we can pass in a source via command line. This is redundant anyway since the nuget feed is used by default: https://github.com/aspnet/AspNetCore/blob/master/eng/tools/BaselineGenerator/Program.cs#L50

[Pilchie]

Sorry for extra work, but can we hold on the 3.2 versioning for now until it's been reviewed appropriately with directors.

[JunTaoLuo]

@Pilchie I reset back to 3.1.0-preview4 for now.

[Pilchie]

Thanks @JunTaoLuo