Multiple "scenes" for screen resize (#270)

## Link to GitHub Issue, if one exists
Fixes #263 

## Description of change
Add "scenes" to screen resize.

* UI changes - F11 menu now has a "scene switcher" for `Scene 1/2/3/4`.
Clean up other UI bits.
* Add hotkeys for `Screen Resize Scene 1`, `Screen Resize 2`, and so on.
* Detect hot key and trigger resizes.
* Add additional objects to screen_resize.json for saving and loading
the new scene settings.
* Existing screen resize data is backwards compatible (can be
loaded/saved to JSON), and is treated as `Scene 1`.
* Add API endpoint for `Resize`, allow toggling resize on/off, switching
active scene
* Add Python wrapper. Did not bother with the other wrappers (Dart, C++,
etc)...

## Compiling
🥇 

## Testing
Still testing, but seems to work fine for TDJ.

src/spice2x/games/io.cpp

@@ -439,6 +439,14 @@ namespace games {
         vkey_defaults.push_back(0xFF);
         names.emplace_back("Screen Resize");
         vkey_defaults.push_back(0xFF);
+        names.emplace_back("Screen Resize Scene 1");
+        vkey_defaults.push_back(0xFF);
+        names.emplace_back("Screen Resize Scene 2");
+        vkey_defaults.push_back(0xFF);
+        names.emplace_back("Screen Resize Scene 3");
+        vkey_defaults.push_back(0xFF);
+        names.emplace_back("Screen Resize Scene 4");
+        vkey_defaults.push_back(0xFF);
         names.emplace_back("Force Exit Game");
         vkey_defaults.push_back(0xFF);
         names.emplace_back("Navigator Activate");

src/spice2x/games/io.h

@@ -23,6 +23,10 @@ namespace games {
             ToggleOverlay,
             ToggleCameraControl,
             ScreenResize,
+            ScreenResizeScene1,
+            ScreenResizeScene2,
+            ScreenResizeScene3,
+            ScreenResizeScene4,
             SuperExit,
             NavigatorActivate,
             NavigatorCancel,