Fixes #405 - stops non-repo from showing up in explorer

Removes Uri monkey patch as it no longer will work
See 03432806c8
Stops encoding uris in .toString calls

Removes gitlens.advanced.git setting

Removes start logging from isTracked

Changes from out to dist
Adds size-plugin (commented out for now)
Adds image cache to improve bundle performance

Adds new webpack tree shaking plugin

Uses webpack for all of it

Changes rebase & reset terminal commands to apply to all commit nodes

Consolidates ui dependencies & build into main

Adds clearing of the user cache on config change
Fixes lint issues and adds some comments

Fixes #457: incorrect displayed username `You`

To allow greater flexibility in how versioned files are implemented