Major refactor: split codebase into multiple files

Now for the fun part: will this compile?

Sources/BigYTMiniPlayer.xm

@@ -0,0 +1,31 @@
+#import "BigYTMiniPlayer.h"
+
+%group BigYTMiniPlayer // https://github.com/Galactic-Dev/BigYTMiniPlayer
+%hook YTWatchMiniBarView
+- (void)setWatchMiniPlayerLayout:(int)arg1 {
+    %orig(1);
+}
+- (int)watchMiniPlayerLayout {
+    return 1;
+}
+- (void)layoutSubviews {
+    %orig;
+    self.frame = CGRectMake(([UIScreen mainScreen].bounds.size.width - self.frame.size.width), self.frame.origin.y, self.frame.size.width, self.frame.size.height);
+}
+%end
+
+%hook YTMainAppVideoPlayerOverlayView
+- (BOOL)isUserInteractionEnabled {
+    if([[self _viewControllerForAncestor].parentViewController.parentViewController isKindOfClass:%c(YTWatchMiniBarViewController)]) {
+        return NO;
+    }
+    return %orig;
+}
+%end
+%end
+
+%ctor {
+    if (IS_ENABLED(@"bigYTMiniPlayer_enabled") && (UIDevice.currentDevice.userInterfaceIdiom != UIUserInterfaceIdiomPad)) {
+        %init(BigYTMiniPlayer);
+    }
+}