* chore: refactor browser IPC into typescript
* chore: refactor app.ts into Typescript
* Refactors app.dock into cpp
* Removes app.launcher which has not existed for 3 years
* Removes 2 deprecated APIs (that have been deprecated for more than one
major)
* Refactors deprecate.ts as well
* perf: use an internal module resolver instead of relative requires
* perf: memoize the results of getting exported Electron properties
* perf: make internal module changes consistent across sandboxed / bundled files
