Add more built-in proxy options (Shadowsocks / ShadowsocksR / SS2022 / Vless / Trojan / VMess

### Issue Details

Add Built-in, Shadowsocks, ShadowsocksR Shadowsocks2022, Trojan, Vless proxies support for android app.

I really like the single window traffic management (firewall, proxy, mobile data or wifi only) in the adguard application. I used the socks5 proxy to work with applications that "experience difficulties" with working in some countries. However, the socks5 protocol is quite easy to ban in the country (which is what is happening). Therefore, now I have a choice - external solutions (NekoBox, v2box, etc.) to connect to my proxy servers. At the same time, I lose the options to ban ads (mitm TLS filtering, centralized firewall), which is very annoying, and every time I have to switch between "turn on proxy, turn off proxy" - besides, adguard does not always work on watchdog mode, in which it starts after disabling the external proxy. Which makes my experience very sad. And this can be easily fixed by adding support for modern protocols to the native application.

see https://github.com/XTLS/Xray-core for more detail

### Proposed solution

The ability to connect to a proxy of new formats from the application directly

### Alternative solution

suffering.
Seriously, if I could run a server on a custom port without root access and connect to it via socks5, as I do on a PC, I wouldn't create this issue. But unfortunately, this is not possible today.