gaby: process vscode-go github issue tracker and discussion

[hyangah]

Unlike most of other Go projects, vscode-go maintains its own GitHub issue tracker and discussion board. Currently Gaby assumes a single github project (golang/go).

Two paths to explore:

• Extend Gaby to handle an org-level project that can consist of multiple repositories and sources. (Related: https://github.com/golang/oscar/issues/43)

  • vscode-go has different issue templates and requirements. (rules, comment fixer)
  • vscode-go will need different issue classification/labeling logic.

• Deploy a separate Gaby instance - not ideal since vscode-go issues are closely related to gopls that's tracked in the golang/go issue tracker. Some issues are transferred between two issue trackers.

[gopherbot]

Change https://go.dev/cl/628016 mentions this issue: internal/gaby: allow multiple github projects

[gopherbot]

Change https://go.dev/cl/628015 mentions this issue: internal/gaby: allow (project,issue) query in overview/rules page

[gopherbot]

Change https://go.dev/cl/629355 mentions this issue: internal/gaby: actually run github.Add