add app_data db connection

backend/database/dbConnection.py

@@ -6,4 +6,12 @@ def dbConnect():
         user="root",
         passwd="C@rtoon1995",
         database="patient_manager"
+    )
+
+def dbAppDataConnect():
+    return mysql.connector.connect(
+        host="mysqldb",
+        user="root",
+        passwd="C@rtoon1995",
+        database="app_data"
     )