* Add status-option code
This commits changes the behavior of waku introducing a new status-code,
`2`, that replaces the current single options codes.
* linting
This commit does a few things:
1) Handle membership updates using protobuf and adds the relevant
endpoints.
2) Store in memory a map of chats + contacts for faster lookups, which
are then flushed to disk on each update
3) Validate incoming messages
Sorry for the large pr, but you know, v1 :)
Andrea Maria Piana
Adam Babik
Pedro Pombeiro