Multiple keymaps and `mousetrap` (#2412)

* WIP

* WIP

* Wip

* Wip

* wip

* Refactor without normalize and plugin

* Replace extendKeymaps by decorateKeymaps

* WIP

* Add mousetrap

* Add first command over rpc

* More commands

* Add all commands

* Begin to hook commands

* Working multiple keymaps

* Use redux action to trigger command

* Use forked version of Mousetrap to capture key events

* Fix lint

* Add command in redux action to debug purpose

* ExecCommand from menu click

* Remove unused files

* Fix xterm should ignore catched events

* Re-enable IntelliSense checking

* Remove unused runes dep