follow up of #2324

• setup CI/CD to package the extension and upload it as release artefact.
  • Harcoded path portability feature/vs code extension #2324 (comment)
• lint the typescript code
  • Possibly investigate string enums feature/vs code extension #2324 (comment)
• fill in missing publishing information (publisher, description, etc)
• record a screencast gif so people know what to expect.
• augment npm tasks to start dotnet watch output to media so debug is easier
• sign the github assets
• sign the vsix
• add a osx-arm64 asset (dotnet workload install ios macos maccatalyst)