Additions

- [protocols] Update `wlr-protocols` to commit `d1598e82240d6e8ca57729495a94d4e11d222033`,
  updating `wlr-layer-shell` to version 4.
- [client] Added the possibility to handle attributes for `event_enum!` macro.
- [server] Added the possibility to handle attributes for `request_enum!` macro.
- [server] Added `PartialEq` implementation for `Client` structure.

Bugfixes

- [client] Allow invocations of `event_enum!` without prior imports with `use`