add angle too bc why not

Author: AbnormalPoof

source/funkin/data/stage/StageData.hx

@@ -281,4 +281,12 @@ typedef StageDataCharacter =
   @:optional
   @:default(1.0)
   var alpha:Float;
+
+  /**
+   * The angle of the character, as a float.
+   * @default 1.0
+   */
+  @:optional
+  @:default(0.0)
+  var angle:Float;
 };

source/funkin/play/stage/Stage.hx

@@ -458,6 +458,7 @@ class Stage extends FlxSpriteGroup implements IPlayStateScriptedClass implements
       character.scrollFactor.y += stageCharData.scroll[1];
 
       character.alpha = stageCharData.alpha;
+      character.angle = stageCharData.angle;
 
       #if FEATURE_DEBUG_FUNCTIONS
       // Draw the debug icon at the character's feet.