make save_user_settings async

src/entity/gateway/entitygateway.rs

@@ -2,6 +2,7 @@ use crate::entity::account::*;
 use crate::entity::character::*;
 use crate::entity::item::*;
 
+// TODO: all these Options should be Results
 #[async_trait::async_trait]
 pub trait EntityGateway: Send + Sync + Clone {
     async fn create_user(&mut self, _user: NewUserAccountEntity) -> Option<UserAccountEntity> {
@@ -28,7 +29,7 @@ pub trait EntityGateway: Send + Sync + Clone {
         unimplemented!();
     }
 
-    fn save_user_settings(&mut self, _settings: &UserSettingsEntity) {
+    async fn save_user_settings(&mut self, _settings: &UserSettingsEntity) {
         unimplemented!();
     }
 
@@ -36,6 +37,7 @@ pub trait EntityGateway: Send + Sync + Clone {
         unimplemented!();
     }
 
+    // TODO: just make this a vec sorted by slot order?
     async fn get_characters_by_user(&self, _user: &UserAccountEntity) -> [Option<CharacterEntity>; 4] {
         unimplemented!();
     }