[YoutubeBridge] Add option to skip members-only videos (#5019)Adds an opt-in checkbox parameter `skip_members_only`, default off. Whenenabled, items in the lockupViewModel JSON shape that carry a`BADGE_MEMBERS_ONLY` badge are dropped, since they require a paid channelmembership to watch. With the option off the feed is unchanged.Only affects the JSON path (when duration_min/duration_max is set); theAtom path relies on YouTube's server-side filtering and ignores it.Co-authored-by: Bjørn A. Andersen