[desktop] Basic grid view implementation (#3479)

Closes #3441

Basic impl of a grid view on the game list. The ideal solution here
would be to use QSortFilterProxyModel and abstract the game list model
out to a QStandardItemModel, but that is too much effort for me rn.
Adapted the "card" design from QML, can 1000% be improved but QPainter
is just such a pain to deal with. Implanting a Qt Quick scene into there
would legitimately be easier.

Anyways, margins and text sizes lgtm at all sizes, though please give
feedback on both that and the general card design.

Future TODOs:
- [ ] Auto size mode
- [ ] Refactor to use models

Signed-off-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3479

src/yuzu/main.ui

@@ -105,6 +105,13 @@
       <string>&amp;Debugging</string>
      </property>
     </widget>
+    <widget class="QMenu" name="menu_Game_List_Mode">
+     <property name="title">
+      <string>&amp;Game List Mode</string>
+     </property>
+     <addaction name="action_Tree_View"/>
+     <addaction name="action_Grid_View"/>
+    </widget>
     <action name="action_Reset_Window_Size_720">
      <property name="text">
       <string>Reset Window Size to &amp;720p</string>
@@ -137,6 +144,7 @@
     <addaction name="separator"/>
     <addaction name="menu_Reset_Window_Size"/>
     <addaction name="menu_View_Debugging"/>
+    <addaction name="menu_Game_List_Mode"/>
    </widget>
    <widget class="QMenu" name="menu_Multiplayer">
     <property name="enabled">
@@ -562,6 +570,22 @@
     <string>&amp;Data Manager</string>
    </property>
   </action>
+  <action name="action_Tree_View">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>&amp;Tree View</string>
+   </property>
+  </action>
+  <action name="action_Grid_View">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>&amp;Grid View</string>
+   </property>
+  </action>
  </widget>
  <resources>
   <include location="yuzu.qrc"/>