Add Chinese localization and comments shortcut

[lwokf]

Adds Simplified Chinese UI strings, local APK-loaded YTPro scripts, and a comments shortcut that opens YouTube's original comment section when available.

[prateek-chaubey]

Bro 🥀

[prateek-chaubey]

Fix the UI bugs as well lol , also don't add javascript files directly in the assets folder , i use CDN to make it auto-updatable
rn youtube have updated the UI , so the buttons need to be updated as well
I didn't get much time to push regular updates

[lwokf]

Thanks for the feedback. I updated the PR to address this:

• Removed the JavaScript files from the Android assets folder.
• Kept the runtime changes in scripts/script.js so the existing CDN update flow can keep working.
• Kept the Android change limited to the zh-rCN string resources.
• Updated the comments shortcut placement/behavior for the current YouTube UI; it now appears earlier in the action bar and targets the native comments entry/fallback instead of adding a separate embedded comments UI.

I also reverted the live chat panel experiment because it could interfere with video playback. Please re-review when you get a chance.

[lwokf]

Small follow-up: I added a safer live-stream path for the comments shortcut as well. On live videos it now tries to open YouTube's native live chat entry first, and falls back to the official live_chat popout URL for the current video. This avoids embedding a live chat iframe or scanning/mutating the playback page, which was the part that could interfere with video playback.