[MM-55152] Add new Desktop API endpoints, improve preload script, some clean-up (#2900)

* Add constants for app info, add to API

* Migrate history button

* Converted calls API over to context bridge, removed some unnecessary logging

* Convert to TS, add types for web app to consume

* Fix tests, prune

* Fix lint

* More changes to support the legacy API

* Force legacy code off, add support for unreads/mentions/expired through the API

* Fix issues with cross-tab login, removed need for log in/log out signalling

* Fixed test, typos

* Change package name for types

* Add some other stuff to the types

* PR feedback

* More feedback

* Use npm package

* Change types and API to provide off listeners

* Version number

* Lock

* Fix typo

* Add sessionID for calls

webpack.config.main.js

@@ -15,9 +15,8 @@ const base = require('./webpack.config.base');
 module.exports = merge(base, {
     entry: {
         index: './src/main/app/index.ts',
-        desktopAPI: './src/main/preload/desktopAPI.js',
-        preload: './src/main/preload/mattermost.js',
-        callsWidget: './src/main/preload/callsWidget.js',
+        internalAPI: './src/main/preload/internalAPI.js',
+        externalAPI: './src/main/preload/externalAPI.ts',
     },
     externals: {
         'macos-notification-state': 'require("macos-notification-state")',