Adds support to "publish" to commit as well

- Avoid confusion on usage
 - Clarifies usage on `weakEvent` which is completely different than `disposables`

- Subscribers can specify the delay and we use the min delay of current subscriptions
 - Defaults Graph & Commit Details to 1s delay (rather than 2.5s)

Adds getBestInstance to WebviewPanelsProxy
Favors active controllers
Favors open tabs if panel is hidden on showing item in graph

Ensures that "lastFetched" sort updates the views properly
Moves sorting settings to a new "Sorting" section

Removes unused canResolveProvider parameter

Allows commit message generation for unstaged changes too

Switches from unmaintained fantasticon to @twbs/fantasticon

- confirm-checked & confirm-unchecked

No functional changes at all

Refs: #1660

Ensures correct repository on GitHub/GitLab enriched autolinks

- Adds weakEvent function to subscribe to events that will be disposed on GC
 - Reworks children handling and dispose across many view nodes