Set admin based on db

src/data_storage.py

@@ -55,9 +55,10 @@ def get_user_id_if_email_exists(email: str) -> int | None:
 
 
 def is_admin(user_id: int):
-    return True
-    # Replace with db data field later
-    return user_id == 1
+    query_result = supabase_client.table(USERS_TABLE).select("admin").eq("user_id", user_id).execute().data
+    if query_result:
+        return query_result[0]["admin"] is True
+    return False
 
 
 def login_by_token(token: str):