Fix Megacloud extractVariables for Zoro

[Kylart]

What kind of change does this PR introduce?
It seems gogoanime are working on making this difficult or something.

This PR fixes (again) Megacloud extractVariables for Zoro.

Did you add tests for your changes?

If relevant, did you update the documentation?

Summary

Other information
Fixes #517

[Kylart]

I wanted to add built files but my yarn build made a ton of file changes even on unrelated files

[Kylart]

@abhishek-exists Can you confirm it's working with these changes?

[abhishek-exists]

Its not reliable @Kylart I used uptime kuma and it seems they change their js code regularly.
I found the best regex which is still working for me even during different alterations
Let me know if you're still facing issues with it.

allvars =
        text
          .match(/\w{1,2}=new URLSearchParams\(window\[.+?new MobileDetect.+?;(?=function)/gm)
          ?.at(-1) ?? "";

CC: @riimuru

[riimuru]

I just tested it, and it seems to be working fine