feat: support starrocks datasource

Author: XiaJunjie2020

backend/apps/db/constant.py

@@ -24,7 +24,7 @@ class DB(Enum):
     redshift = ('redshift', 'AWS Redshift', '"', '"', ConnectType.py_driver)
     es = ('es', 'Elasticsearch', '"', '"', ConnectType.py_driver)
     kingbase = ('kingbase', 'Kingbase', '"', '"', ConnectType.py_driver)
-    starrocks = ('starrocks', 'StarRocks', '"', '"', ConnectType.py_driver)
+    starrocks = ('starrocks', 'StarRocks', '`', '`', ConnectType.py_driver)
 
     def __init__(self, type, db_name, prefix, suffix, connect_type: ConnectType):
         self.type = type