Add FOSSA badges

Author: trask

README.md

@@ -1,4 +1,6 @@
 [![Release](https://img.shields.io/github/v/release/open-telemetry/opentelemetry-java-contrib?include_prereleases&style=)](https://github.com/open-telemetry/opentelemetry-java-contrib/releases/)
+[![FOSSA Status](https://app.fossa.com/api/projects/custom%2B51454%2Fgithub.com%2Fopen-telemetry%2Fopentelemetry-java-contrib.svg?type=shield&issueType=license)](https://app.fossa.com/projects/custom%2B51454%2Fgithub.com%2Fopen-telemetry%2Fopentelemetry-java-contrib?ref=badge_shield&issueType=license)
+[![FOSSA Status](https://app.fossa.com/api/projects/custom%2B51454%2Fgithub.com%2Fopen-telemetry%2Fopentelemetry-java-contrib.svg?type=shield&issueType=security)](https://app.fossa.com/projects/custom%2B51454%2Fgithub.com%2Fopen-telemetry%2Fopentelemetry-java-contrib?ref=badge_shield&issueType=security)
 [![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/open-telemetry/opentelemetry-java-contrib/badge)](https://scorecard.dev/viewer/?uri=github.com/open-telemetry/opentelemetry-java-contrib)
 [![OpenSSF Best Practices](https://www.bestpractices.dev/projects/9992/badge)](https://www.bestpractices.dev/projects/9992)
 [![Slack](https://img.shields.io/badge/slack-@cncf/otel--java-blue.svg?logo=slack)](https://cloud-native.slack.com/archives/C014L2KCTE3)