feat(gpodder_sqlite): add user admin field

gpodder_sqlite/src/models/user.rs

@@ -9,6 +9,7 @@ pub struct User {
     pub id: i64,
     pub username: String,
     pub password_hash: String,
+    pub admin: bool,
 }
 
 #[derive(Insertable)]

gpodder_sqlite/src/repository/auth.rs

@@ -18,6 +18,7 @@ impl From<User> for gpodder::User {
             id: value.id,
             username: value.username,
             password_hash: value.password_hash,
+            admin: value.admin,
         }
     }
 }

gpodder_sqlite/src/schema.rs

@@ -58,6 +58,7 @@ diesel::table! {
         id -> BigInt,
         username -> Text,
         password_hash -> Text,
+        admin -> Bool,
     }
 }