Fix AltGr and broken shift cases in keyboard input (#717)
* Update to use 'key' instead of 'code'
* Incorporate keyboard-layout
* Get AltGraph cases working by leveraging the keyboard-layout module
* Fix regression in QuickOpen menu
* Fix lint issues
* Split out keyboard pieces and factor to subfolder, add resolution strategy
* Fix lint issues
* Create failing test for <c-s-p> case
* Add scaffolding for english-intl tests
* Add fix for failing unit test
* Add additional tests to ResolverTests.ts
* Fix remaining lint errors