Support Discord's new E2EE using libdave

[StayBlue]

Discord is beginning to roll out their own in-house implementation of E2EE (read here). I do not know how secure it is, but the issue I foresee happening is that once non-E2EE calls are deprecated, abaddon's voice support will break (see the deprecation note here). To circumvent this, abaddon can implement libdave, which is the open-source library that Discord uses for E2EE.

[ouwou]

well i dont plan on letting voice break so ill try my best to figure it out before the deprecation window ends