[bottiger]

Well it doesn't seem like anyone else has been using this except for us. Here's a major update.

Changes

- Now supports HTTP2 and Brotli.
- Updated to compile on Sourcemod 1.10.
- All libraries updated to latest version
- Moved to Github
- Removed unused features from libcurl: idn, ldap, ftp, file, dict, telnet, tftp, rtsp, pop3, imap, smtp, gopher, rtmp, smb.

I did not add HTTP3 support because it is experimental in libcurl and it uses UDP, which means it could potentially bind a game server port that you were using if you use multiple servers on the same ip and restarted one of the servers.