[SIS-9] adding migration scripts for custom commands and economy

tools/custom-command-migration/main.py

@@ -0,0 +1,20 @@
+import os
+import sqlalchemy as db
+
+from legacy_loader import load_all_commands
+from command_importer import import_commands
+
+server_id = os.getenv('SERVER_ID')
+
+all_warnings = load_all_commands()
+db_host = os.getenv('DB_HOST')
+db_port = os.getenv('DB_PORT')
+db_database = os.getenv('DB_NAME')
+db_user = os.getenv('DB_USER')
+db_password = os.getenv('DB_PASS')
+
+engine = db.create_engine('postgresql://%s:%s@%s:%s/%s' % (db_user, db_password, db_host, db_port, db_database))
+
+with engine.connect() as con:
+    with con.begin():
+        import_commands(server_id, all_warnings, con)