Remove WindowManager, separate functionality into smaller modules (#2682)

* Move sendToRenderer to respective singletons

* Move to using ViewManager call for getting view by webContentsId

* Move show and create logic to main window, handle deep linking seperately

* Move resizing logic and event handing to mainWindow

* Move server switching logic to main/app

* Move tab switching logic to main/app, rely on showById for most usage

* Migrate remaining functions, remove windowManager objects, set up imports for self-contained singletons

* Fix E2E tests

* Update src/main/app/servers.ts

Co-authored-by: Elias Nahum <nahumhbl@gmail.com>

---------

Co-authored-by: Elias Nahum <nahumhbl@gmail.com>

e2e/specs/menu_bar/file_menu.test.js

@@ -60,21 +60,12 @@ describe('file_menu/dropdown', function desc() {
         });
     }
 
-    it('MM-T804 Preferences in Menu Bar open the Settings page', async () => {
-        const mainWindow = this.app.windows().find((window) => window.url().includes('index'));
-        mainWindow.should.not.be.null;
-        robot.keyTap(',', [env.cmdOrCtrl]);
-        const settingsWindow = await this.app.waitForEvent('window', {
-            predicate: (window) => window.url().includes('settings'),
-        });
-        settingsWindow.should.not.be.null;
-
-        if (process.platform !== 'darwin') {
-            robot.keyTap('w', [env.cmdOrCtrl]);
-
+    if (process.platform !== 'darwin') {
+        it('MM-T804 Preferences in Menu Bar open the Settings page', async () => {
             //Opening the menu bar
-            robot.keyTap('alt');
-            robot.keyTap('enter');
+            const mainWindow = this.app.windows().find((window) => window.url().includes('index'));
+            mainWindow.should.not.be.null;
+            await mainWindow.click('button.three-dot-menu');
             robot.keyTap('f');
             robot.keyTap('s');
             robot.keyTap('enter');
@@ -82,8 +73,8 @@ describe('file_menu/dropdown', function desc() {
                 predicate: (window) => window.url().includes('settings'),
             });
             settingsWindowFromMenu.should.not.be.null;
-        }
-    });
+        });
+    }
 
     // TODO: Causes issues on Windows so skipping for Windows
     if (process.platform !== 'win32') {

e2e/specs/server_management/add_server_modal.test.js

@@ -139,6 +139,7 @@ describe('Add Server Modal', function desc() {
                 name: 'TestTeam',
                 url: 'http://example.org/',
                 order: 2,
+                lastActiveTab: 0,
                 tabs: [
                     {
                         name: 'TAB_MESSAGING',

e2e/specs/server_management/configure_server_modal.test.js

@@ -86,6 +86,7 @@ describe('Configure Server Modal', function desc() {
             url: 'http://example.org/',
             name: 'TestTeam',
             order: 0,
+            lastActiveTab: 0,
             tabs: [
                 {
                     name: 'TAB_MESSAGING',