Add license and build status badges to README

Author: coolbeevip

README.md

@@ -1,6 +1,8 @@
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 # CAMEL DatabaseAgent
 
+[![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
+[![build](https://github.com/coolbeevip/camel-database-agent/actions/workflows/pr.yml/badge.svg)](https://github.com/coolbeevip/camel-database-agent/actions/workflows/pr.yml)
+
 An open-source toolkit helping developers build natural language database query solutions based on [CAMEL](https://github.com/camel-ai/camel).
 
 ## Core Components