* Initial set of dispose implementations
Not handled yet:
- Discord.Net.Websocket/Entities/SocketGuild
- Discord.Net.Tests
* Refactor DiscordSocketClient init into ctor
This way we remove an IDisposableAnalyzer warning for not disposing
the client when we set the client variable.
* Dispose of clients when disposing sharded client
* Finish implementing IDisposable where appropriate
I opted to use NoWarn in the Tests project as it wasn't really necessary
considering that our tests only run once
* Tweak samples after feedback
