Create source-only filter package

[Youssef1313]

Fixes #15361

[Copilot]

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[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 14 out of 14 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 15 out of 15 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 15 out of 15 changed files in this pull request and generated 1 comment.

[Youssef1313]

@copilot Create a new test project for the new package.

You MUST:

• Open a separate PR for that. Do not push to this PR.
• The new test project shouldn't reference the csproj. Instead, it should manually add the C# source files to Compile item.
• Write basic tests to validate the behavior of the APIs.

[Copilot]

@Youssef1313 I've opened a new pull request, #15641, to work on those changes. Once the pull request is ready, I'll request review from you.

[Youssef1313]

@nohwnd Would you like to change all namespaces in the source-only package?

[Youssef1313]

@copilot Please review this PR and add a comment with your findings. During review, ensure that all classes in the new package are internal and have embedded attribute (except when under #if IS_VSTEST_REPO).