Add badge to README.md

[rogaldh]

Description

Badge added

Type of change

• Documentation update

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Lint and prettier checks pass locally
• I run the changeset and updated versions of the packages and repository (if applicable)