Implemented alembic migrations, added cursors closing task.

utils/mysql_scripts.py

@@ -1,3 +1,4 @@
+
 from data.schemas import SelectQueryBase
 
 def build_sql_query_text(query: SelectQueryBase) -> tuple[str, list]:

utils/scripts.py

@@ -20,6 +20,12 @@ async def pools_creator():
         mysql.pools[connection.id] = await mysql.pool_creator(connection=connection)
     logging.info(msg='Created Pools')
 
+async def cursors_closer():
+    from dbs import mysql
+    for cursor_id, cursor in mysql.cached_cursors.items():
+        await cursor.close()
+        logging.info(f'Closed cursor: {cursor_id}')
+
 async def pools_destroy():
     from dbs import mysql
     for connection_id, pool in mysql.pools.items():