[CI] Add Coverity badge

Author: KFilipek

README.md

@@ -7,6 +7,7 @@
 [![Benchmarks](https://github.com/oneapi-src/unified-memory-framework/actions/workflows/benchmarks.yml/badge.svg?branch=main)](https://github.com/oneapi-src/unified-memory-framework/actions/workflows/benchmarks.yml)
 [![Nightly](https://github.com/oneapi-src/unified-memory-framework/actions/workflows/nightly.yml/badge.svg?branch=main)](https://github.com/oneapi-src/unified-memory-framework/actions/workflows/nightly.yml)
 [![OpenSSF Scorecard](https://api.securityscorecards.dev/projects/github.com/oneapi-src/unified-memory-framework/badge)](https://securityscorecards.dev/viewer/?uri=github.com/oneapi-src/unified-memory-framework)
+[![Coverity](https://scan.coverity.com/projects/29761/badge.svg?flat=0)](https://scan.coverity.com/projects/oneapi-src-unified-memory-framework)
 
 ## Introduction