Pavel Oborin

- Added basic support for `Binding` method of STUN ([RFC 3489](https://www.rfc-editor.org/rfc/rfc3489)). - Added attributes: - `USERNAME` - `MESSAGE-INTEGRITY` - `XOR-MAPPED-ADDRESS` - `USE-CANDIDATE` - `PRIORITY` - `FINGERPRINT` - `ICE-CONTROLLING` - `GOOG-NETWORK-INFO`

RTCP improvements

1

Hey there! I'm improving #3460 with correct dissection of stacked packets and new RTCP types.