Changes stash[Apply|Delete|Save] commands to use new git commands

it's the same as #548 for ansible language

Changes checkout in views to run via git commands
Changes fetch in views & palette to run via git commands
Changes pull in views & palette to run via git commands
Changes push in views & palette to run via git commands
Adds skip confirmation support for some git commands
Adds gitCommands.skipConfirmation setting
Adds force option to push git command
Adds local branch creation to remote branch checkout git command
Adds arbitrary ref support to checkout git command

Changes working tree/branch comparision selection to be per-comparison

Fixes show more in file/line history

Switches to use fork-ts-checker