Major refactor: split codebase into multiple files

Now for the fun part: will this compile?

Sources/YTNoHoverCards.x

@@ -0,0 +1,10 @@
+#import "uYouPlus.h"
+
+// YTNoHoverCards: https://github.com/level3tjg/YTNoHoverCards
+%hook YTCreatorEndscreenView
+- (void)setHidden:(BOOL)hidden {
+    if (IS_ENABLED(@"hideHoverCards_enabled"))
+        hidden = YES;
+    %orig;
+}
+%end