Cleans up overloads

Avoids debouncing repo change events
Allows for immediate resetting up data, but still debounces updates
Also avoids a repo change event clearing valuable data after the fact

Remembers & attempts restore of last known git path (per workspace)
Races a git path search while getting the path from SCM

Renames content method for clarity

Should help with eventual testing

Consolidates to node-fetch 2.6.7 as Octokit requires v2

- Adds proper error handling & messaging
  - Handles uncommitted lines
Adds open prior blame to hover on uncommitted lines

Avoids saving/re-saving object if it isn't changing

Avoids re-export from git provider service

Abstracts node path imports to system/path

Adds more docs
Removes unused original file name from diff calls

Avoids default params to reduce garbage

For virtual workspaces. Will be continually converting strings to Uris

Moves eslint ignores into rc file
 Removes unused dev dependency

Possible catastrophic backtracking with large inputs (very unlikely in the wild)