* Fix a problem where YouTube thumbnail URLs have been created incorrectly
* improve error handling and API initialization in player HTML files
* Add resume time support for YouTube
* optimize metadata extraction in youtube_meta.html

These changes should fix minor bugs on YouTube and make videos load/request a little faster.

* The player's FOV settings are no longer changed. This is noticeable when switching weapons for the first time after (re)spawning.

+ The player model selector can now be used in the options area via the TAB/scoreboard. It is a slightly modified version of the sandbox game mode, and your sandbox settings will also work here.

*Make Cinema_Theatron optional as a download
(Instead of forcing the download with resource.AddWorkshop() )

Due to (government) web restrictions in certain countries with Cloudflare, I have decided NOT to host the YouTube players on Cloudflare. Instead, I have decided to host these HTML web pages at my own expense on a paid CDN provider worldwide.

Unfortunately, Github Pages is not an option, as YouTube then displays advertisements.

This is an experiment and may change in the future!

* The websites are no longer hosted under my personal domain, instead GitHub's own domain is used.
The exception is the YouTube players, which are hosted on Cloudflare to ensure the fastest possible loading time.

See https://github.com/PurrCoding/cinema

See https://github.com/PurrCoding/cinema

* Round duration of YouTube videos

See https://github.com/PurrCoding/cinema


* Fix the missing web pages (thanks for nothing, Netlify 💔)

See https://github.com/PurrCoding/cinema

* Replace metadata crawling with an IFrame API-based query for YouTube, which should mitigate ongoing changes on YouTube's part.
* Fix a bug where the key is not returned if translation key is missing.