Fix badvpn

[UjuiUjuMandan]

1. Move libtun2socks dependencies to main repository to prevent the troubles of submodule-in-submodule.
2. Applying my Update dependencies #4301 (comment).

Workflow: https://github.com/UjuiUjuMandan/v2rayNG/actions/runs/13065632650/job/36457432151

[UjuiUjuMandan]

And, if you haven't, read this:

• 04c9832#commitcomment-151980445

[UjuiUjuMandan]

Should be OK now, the previous cache key was wrong.

New workflow: https://github.com/UjuiUjuMandan/v2rayNG/actions/runs/13065741685/job/36457717331

[UjuiUjuMandan]

I'm not sure if the new socks_udp_client of libtun2socks worked well...please test DNS and HTTP/3 connectivity first.
No, it's not used by default.