fix: update README badges for npm downloads, license, and CI workflows

Author: LabEG

README.md

@@ -1,7 +1,10 @@
 # ts-serializable
 
 [![npm version](https://img.shields.io/npm/v/ts-serializable.svg)](https://www.npmjs.com/package/ts-serializable)
-[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
+[![npm downloads](https://img.shields.io/npm/dm/ts-serializable.svg)](https://www.npmjs.com/package/ts-serializable)
+[![License: MIT](https://img.shields.io/github/license/LabEG/Serializable.svg)](https://github.com/LabEG/Serializable/blob/master/LICENSE)
+[![Test PR](https://github.com/LabEG/Serializable/workflows/Test%20Pull%20Request/badge.svg)](https://github.com/LabEG/Serializable/actions)
+[![CodeQL](https://github.com/LabEG/Serializable/workflows/CodeQL%20Advanced/badge.svg)](https://github.com/LabEG/Serializable/security/code-scanning)
 
 Powerful and flexible TypeScript/JavaScript library for serialization and deserialization with decorators