Updated badges (#78)

Author: Evagan2018

README.md

@@ -1,3 +1,6 @@
+[![License](https://img.shields.io/badge/License-Apache--2.0-green)](https://github.com/Arm-Software/CMSIS-Compiler/blob/main/LICENSE)
+[![Usage Example](https://img.shields.io/github/actions/workflow/status/Arm-Software/CMSIS-Compiler/Build_Run_example.yml?logo=arm&logoColor=0091bd&label=Usage%20Example)](./.github/workflows/Build_Run_example.yml)
+[![Build pack](https://img.shields.io/github/actions/workflow/status/Arm-Software/CMSIS-Compiler/pack.yml?logo=arm&logoColor=0091bd&label=Build%20pack)](./.github/workflows/pack.yml)
 # CMSIS-Compiler Support
 
 ## About