feat-webgarages-121 (#129)

### Description

Closes #121

### Please confirm

- [x] I am the legal owner or represent the legal owner of all work submitted (including LLM-generated code, if any)
- [x] I consent to my changes being added to this FOSS project
- [x] I have confirmed that this does not add new errors or warnings with `utils/clippy.sh`
- [ ] This PR used LLMs to generate some or all of the code changes

Reviewed-on: https://git.ngram.ca/OpenJam/rc-servers/pulls/129

rc_core/src/persist/user/traits.rs

@@ -676,7 +676,19 @@ pub trait FactoryUser {
 
 #[async_trait::async_trait]
 pub trait WebUser: CommonUser {
+    async fn garages(&self) -> Result<Vec<GarageWebInfo>, Box<dyn std::error::Error>>;
+    async fn garage_by_id(&self, id: i32) -> Result<Option<VehicleData>, Box<dyn std::error::Error>>;
+    async fn save_garage(&self, vehicle: crate::persist::user::VehicleData, garage_id: Option<i32>, cpu_counter: &crate::cubes::CpuListParser, weapon_orderer: &crate::cubes::WeaponListParser) -> Result<(), Box<dyn std::error::Error>>;
+    async fn garage_id_selected(&self) -> Result<Option<i32>, Box<dyn std::error::Error>>;
+}
 
+pub struct GarageWebInfo {
+    pub id: i32,
+    pub slot: i32,
+    pub total_robot_cpu: i32,
+    pub bay_cpu: i32,
+    pub name: String,
+    pub creation_time: i64,
 }
 
 #[async_trait::async_trait]