[desktop] Add icon-only mode to grid and improve design (#3485)

- Move Game Icon Size to the main toolbar. It's cleaner that way
- Add a "Show Game Name" toggle that does as it says. Disabling it
  basically creates an "icons-only" mode. Useful for controller-only
  nav with big icons (TODO: maybe make a 192 size?)
- Fixed a crash with controller nav. Oops
- Rounded corners of the game icon in grid mode
- Fixed the scroll bar creating extra clamping range on the grid icons
- Item can be deselected if user clicks on the blank space outside of the view

As a bonus fixed a crash on mod manager

Future TODOs for design:
- [ ] Row 1 type. Not sure what to do here tbh.
- [ ] Move around game list settings in configure_ui to make it clear
  that nothing there affects the grid view.
- [ ] 192x192 size? 256 feels too big on my 1440p screen whereas 128
  feels too small.
- Set text space as a function of fontMetrics.

Signed-off-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3485
Reviewed-by: DraVee <dravee@eden-emu.dev>
Reviewed-by: Maufeat <sahyno1996@gmail.com>

src/yuzu/configuration/configure_ui.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>363</width>
-    <height>603</height>
+    <height>613</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -111,20 +111,6 @@
           </property>
          </widget>
         </item>
-        <item>
-         <layout class="QHBoxLayout" name="game_icon_size_qhbox_layout_2">
-          <item>
-           <widget class="QLabel" name="game_icon_size_label">
-            <property name="text">
-             <string>Game Icon Size:</string>
-            </property>
-           </widget>
-          </item>
-          <item>
-           <widget class="QComboBox" name="game_icon_size_combobox"/>
-          </item>
-         </layout>
-        </item>
         <item>
          <layout class="QHBoxLayout" name="folder_icon_size_qhbox_layout_2">
           <item>
@@ -221,7 +207,7 @@
                <string>TextLabel</string>
               </property>
               <property name="alignment">
-               <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+               <set>Qt::AlignmentFlag::AlignRight|Qt::AlignmentFlag::AlignTrailing|Qt::AlignmentFlag::AlignVCenter</set>
               </property>
              </widget>
             </item>
@@ -251,7 +237,7 @@
    <item>
     <spacer name="verticalSpacer">
      <property name="orientation">
-      <enum>Qt::Vertical</enum>
+      <enum>Qt::Orientation::Vertical</enum>
      </property>
      <property name="sizeHint" stdset="0">
       <size>