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/api/modules/resize.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "api/module.h"
+#include "api/request.h"
+
+namespace api::modules {
+
+    class Resize : public Module {
+    public:
+        Resize();
+
+    private:
+
+        // function definitions
+        void image_resize_enable(Request &req, Response &res);
+        void image_resize_set_scene(Request &req, Response &res);
+    };
+}