Merge branch 'js/builtin-add-i-cmds'

"git add -i" that is getting rewritten in C has been extended to cover subcommands other than the "patch". * js/builtin-add-i-cmds: built-in add -i: offer the `quit` command built-in add -i: re-implement the `diff` command built-in add -i: implement the `patch` command built-in add -i: re-implement `add-untracked` in C built-in add -i: re-implement `revert` in C built-in add -i: implement the `update` command built-in add -i: prepare for multi-selection commands built-in add -i: allow filtering the modified files list add-interactive: make sure to release `rev.prune_data`