feat(auth): add SeaORM entities and DTOs for auth module

- 11 entity files mapping to all auth migration tables
- DTOs with validation: LoginReq, CreateUserReq, CreateRoleReq, etc.
- Response DTOs: UserResp, RoleResp, PermissionResp, OrganizationResp, etc.
- Added workspace dependencies: jsonwebtoken, argon2, validator, thiserror, utoipa

crates/erp-auth/Cargo.toml

@@ -5,6 +5,7 @@ edition.workspace = true
 
 [dependencies]
 erp-core.workspace = true
+erp-common.workspace = true
 tokio.workspace = true
 serde.workspace = true
 serde_json.workspace = true
@@ -14,3 +15,8 @@ axum.workspace = true
 sea-orm.workspace = true
 tracing.workspace = true
 anyhow.workspace = true
+thiserror.workspace = true
+jsonwebtoken.workspace = true
+argon2.workspace = true
+validator.workspace = true
+utoipa.workspace = true