[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/qt_common/util/mod.cpp

@@ -43,6 +43,8 @@ QStringList GetModFolders(const QString& root, const QString& fallbackName) {
         QString name = QtCommon::Frontend::GetTextInput(
             tr("Mod Name"), tr("What should this mod be called?"), default_name);
 
+        if (name.isEmpty()) return {};
+
         // if std_path is empty, frontend_common could not determine mod type and/or name.
         // so we have to prompt the user and set up the structure ourselves
         if (paths.empty()) {