feat: implement tray and minimize behaviors (#13851)

This PR introduces new window behaviors, which can be enabled when the
menubar setting is active:

New Features:
- Quick open from tray icon
- Minimize to tray
- Exit to tray
- Start minimized

These changes have not yet been tested on macOS.

<img width="645" height="479" alt="image"
src="https://github.com/user-attachments/assets/7bdd13d0-5322-45a4-8e71-85c081aa0c86"
/>


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Configurable menubar/tray behaviors: open on left-click, minimize to
tray, close to tray (exit to tray), and start minimized.

* **UI**
* Appearance settings add a Menubar → Window Behavior group with four
toggles; group shows only when menubar/tray is enabled (hidden on
macOS).

* **Settings**
* Tray settings persisted and exposed via the settings API with getters
and setters for each option.

* **Localization**
* Added translation keys and English strings for the new controls and
descriptions.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: Peng Xiao <pengxiao@outlook.com>

packages/frontend/apps/electron/src/main/tray/index.ts

@@ -317,7 +317,14 @@ class TrayState implements Disposable {
         logger.debug('User clicked on tray icon');
         this.update();
         if (!isMacOS()) {
-          this.tray?.popUpContextMenu();
+          if (
+            TraySettingsState.value.enabled &&
+            TraySettingsState.value.openOnLeftClick
+          ) {
+            showMainWindow();
+          } else {
+            this.tray?.popUpContextMenu();
+          }
         }
         updateApplicationsPing$.next(Date.now());
       };