There has to be a better way to do this

- Adds Show Commit in Graph to the Commit Details view
Attempts to fix Graph data paging using `--boundary`

- Allows for more performant querying
Optimizes local git graph data to avoid extra lookups

Switches preview badge / feedback order

- adds feedback link
- updates focus state colors
- updates aria-activedescendant when viewing repos

- Provides GraphRows directly from the extension to the webview
- Only serializes row diffs to the webview when paging
- Adds commit avatars
- Fixes stale history when shown (after the first time)