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