implement option to disable scrolling in the fullscreen viewer

src/content-script/main.css

@@ -48,6 +48,9 @@ html[global_enable="true"][remove_all_but_one="true"] ytd-browse[page-subtype="h
 html[global_enable="true"][remove_extra_rows="true"] ytd-browse[page-subtype="home"] ytd-rich-grid-renderer > #contents > ytd-rich-grid-row + ytd-rich-section-renderer,
 html[global_enable="true"][remove_infinite_scroll="true"] ytd-browse[page-subtype="home"] ytd-rich-grid-renderer > #contents > ytd-continuation-item-renderer,
 
+/* Video Player - UX */
+html[global_enable="true"][disable_fullscreen_scroll="true"] ytd-watch-flexy[fullscreen] div#columns,
+
 /* Video Player - UI*/
 html[global_enable="true"][remove_entire_sidebar="true"] #secondary,
 html[global_enable="true"][remove_sidebar_infinite_scroll="true"] #secondary #contents ytd-continuation-item-renderer,

src/shared/main.js

@@ -210,6 +210,11 @@ const SECTIONS = [
         id: "disable_playlist_autoplay",
         defaultValue: false
       },
+      {
+        name: "Disable scroll in fullscreen",
+        id: "disable_fullscreen_scroll",
+        defaultValue: false
+      },
       {
         name: "Redirect shorts to the default viewer",
         tags: "Redirects, Basic",
@@ -626,6 +631,7 @@ const idToShortId = {
   "remove_extra_sidebar_tags":         '75',
   "remove_video_likes":                '76',
   "remove_channel_for_you":            '77',
+  "disable_fullscreen_scroll":         '78',
 };