Fixes tags on the Graph for remote repos

Uses the core git fetch command instead of a command-line
git fetch so VsCode will prompt the user for their username
and password. Pull & push also use their corresponding core commands.

Aligns worktree open prompting using quick picks

- Always creates a new worktree from the "main" repo
 - Automatically shows the worktree view after creation
 - Adds `worktrees.openAfterCreate` setting

Adds container, commit, branch, tag, and view node protection to the default resolver for @gate & @memoize decorators