feat(core): implement emoji model

closes #270

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

@@ -3,9 +3,11 @@ mod channel_invites;
 mod channel_unreads;
 mod channel_webhooks;
 mod channels;
+mod emojis;
 mod files;
 mod server_members;
 mod servers;
+mod user_settings;
 mod users;
 
 pub use bots::*;
@@ -13,7 +15,9 @@ pub use channel_invites::*;
 pub use channel_unreads::*;
 pub use channel_webhooks::*;
 pub use channels::*;
+pub use emojis::*;
 pub use files::*;
 pub use server_members::*;
 pub use servers::*;
+pub use user_settings::*;
 pub use users::*;