Replaces terminal merge with merge git command
Replaces terminal rebase with rebase git command

Giving up on better else/catch/finally formatting -- can't fight anymore
Switching to tabs for better accessibility
https://twitter.com/sh4na/status/1146837957200027648

Git 2.23.0 splits checkout into switch & restore

Reworks generator types

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