add app_data db connection

backend/database/dbConnection.py

@@ -7,3 +7,11 @@ def dbConnect():
         passwd="C@rtoon1995",
         database="patient_manager"
     )
+
+def dbAppDataConnect():
+    return mysql.connector.connect(
+        host="mysqldb",
+        user="root",
+        passwd="C@rtoon1995",
+        database="app_data"
+    )