BREAKING CHANGE: This commit removes the magit-gitflow package because:
- It is not considered a "universal" default. I.e. The majority of git
users do not know of or use it, much less need it.
- The elisp configuration for it is trivial. It doesn't warrant
Doom-specific support for it and is trivial enough for end-users to
deploy themselves with minimal difficulty.
Close: #7015
Fewer links means less confusion.
- Merge doom-issue and doom-commit links into doom-ref (for auto-linking
Issue/PR/commit references).
- Merge doom-module-source and doom-docs-source links into doom-source.
- Rename doom-report-issue to doom-report.
- Use '!' as the icon for module issues link.
- Remove doom-repo (replaced with "doom:*" in :lang org module).
- Add doomdir and emacsdir links to :lang org module.