Major refactor: split codebase into multiple files

Now for the fun part: will this compile?

Sources/Themes.h

@@ -0,0 +1,55 @@
+#import "../Tweaks/YouTubeHeader/YTCommonColorPalette.h"
+#import "../Tweaks/YouTubeHeader/ASCollectionView.h"
+#import "uYouPlus.h"
+
+@interface YCHLiveChatView : UIView
+@end
+
+@interface YTFullscreenEngagementOverlayView : UIView
+@end
+
+@interface YTRelatedVideosView : UIView
+@end
+
+@interface ELMView : UIView
+@end
+
+@interface ASWAppSwitcherCollectionViewCell : UIView
+@end
+
+@interface ASScrollView : UIView
+@end
+
+@interface UIKeyboardLayoutStar : UIView
+@end
+
+@interface UIKeyboardDockView : UIView
+@end
+
+@interface _ASDisplayView : UIView
+@end
+
+@interface YTCommentDetailHeaderCell : UIView
+@end
+
+@interface SponsorBlockSettingsController : UITableViewController
+@end
+
+@interface SponsorBlockViewController : UIViewController
+@end
+
+@interface UICandidateViewController : UIViewController
+@end
+
+@interface UIPredictionViewController : UIViewController
+@end
+
+@interface FRPreferences : UITableViewController
+@end
+
+@interface FRPSelectListTable : UITableViewController
+@end
+
+@interface settingsReorderTable : UIViewController
+@property(nonatomic, strong) UITableView *tableView;
+@end