[hle/ui] Add cmds and fix invalid handle return, remove Starter applet from UI (#3376)

This fixes qlaunch "+ Options" :)

More:
- Remove Starter-Applet from menu (Starter is started by qlaunch)
- Stub OLSC cmds and add IStopperObject
- Fail-safe invalid handle return for system applets
- Stub IHomeMenuFunctions::IsSleepEnabled (closes qlaunch now when hitting sleep)
- Lower BuiltInNews timeout from 10s to 2s
- Use proper Event instead of KEvent in npns

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3376
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: Maufeat <sahyno1996@gmail.com>
Co-committed-by: Maufeat <sahyno1996@gmail.com>

src/yuzu/main.ui

@@ -172,7 +172,6 @@
      <addaction name="action_Launch_QLaunch"/>
      <addaction name="action_Launch_MiiEdit"/>
      <addaction name="action_Launch_Controller"/>
-     <addaction name="action_Launch_Setup"/>
      <addaction name="action_Launch_PhotoViewer"/>
     </widget>
     <widget class="QMenu" name="menuTAS">
@@ -508,14 +507,6 @@
     <string>&amp;Home Menu</string>
    </property>
   </action>
-  <action name="action_Launch_Setup">
-   <property name="text">
-    <string>&amp;Setup</string>
-   </property>
-   <property name="menuRole">
-    <enum>QAction::MenuRole::TextHeuristicRole</enum>
-   </property>
-  </action>
   <action name="action_Desktop">
    <property name="text">
     <string>&amp;Desktop</string>