feat(core/models): implement server model

closes #279

crates/core/models/src/v0/mod.rs

@@ -2,10 +2,12 @@ mod bots;
 mod channel_webhooks;
 mod channels;
 mod files;
+mod servers;
 mod users;
 
 pub use bots::*;
 pub use channel_webhooks::*;
 pub use channels::*;
 pub use files::*;
+pub use servers::*;
 pub use users::*;