Ensures correct repository on GitHub/GitLab enriched autolinks

Adds state prop to issues & prs
Removes some enums in favor of union types

- Avoids blocking UI & improves perf of enrichment of autolinks & PRs
 - Affects inline blame, hovers, statusbar blame, autolinks
Improves performance of autolink detection
Improves line tracking & state management
 - Avoids using a class for state
 - Only resets when needed
 - Adds more state storage & updates state rather than replacing it
Adds a new CacheProvider for better caching