chore: Add fossa & openssf badges (#3269)

Co-authored-by: Lalit Kumar Bhasin <[email protected]>

Author: thompson-tomo

README.md

@@ -4,10 +4,13 @@ The Rust [OpenTelemetry](https://opentelemetry.io/) implementation.
 
 [![Crates.io: opentelemetry](https://img.shields.io/crates/v/opentelemetry.svg)](https://crates.io/crates/opentelemetry)
 [![LICENSE](https://img.shields.io/crates/l/opentelemetry)](./LICENSE)
+[![FOSSA Status](https://app.fossa.com/api/projects/custom%2B162%2Fgithub.com%2Fopen-telemetry%2Fopentelemetry-rust.svg?type=shield&issueType=license)](https://app.fossa.com/projects/custom%2B162%2Fgithub.com%2Fopen-telemetry%2Fopentelemetry-rust?ref=badge_shield&issueType=license)
+[![FOSSA Status](https://app.fossa.com/api/projects/custom%2B162%2Fgithub.com%2Fopen-telemetry%2Fopentelemetry-rust.svg?type=shield&issueType=security)](https://app.fossa.com/projects/custom%2B162%2Fgithub.com%2Fopen-telemetry%2Fopentelemetry-rust?ref=badge_shield&issueType=security)
 [![GitHub Actions CI](https://github.com/open-telemetry/opentelemetry-rust/workflows/CI/badge.svg)](https://github.com/open-telemetry/opentelemetry-rust/actions?query=workflow%3ACI+branch%3Amain)
 [![Documentation](https://docs.rs/opentelemetry/badge.svg)](https://docs.rs/opentelemetry)
 [![codecov](https://codecov.io/gh/open-telemetry/opentelemetry-rust/branch/main/graph/badge.svg)](https://codecov.io/gh/open-telemetry/opentelemetry-rust)
 [![OpenSSF Scorecard](https://api.scorecard.dev/projects/github.com/open-telemetry/opentelemetry-rust/badge)](https://scorecard.dev/viewer/?uri=github.com/open-telemetry/opentelemetry-rust)
+[![OpenSSF Best Practices](https://www.bestpractices.dev/projects/10394/badge)](https://www.bestpractices.dev/projects/10394)
 [![Slack](https://img.shields.io/badge/slack-@cncf/otel/rust-brightgreen.svg?logo=slack)](https://cloud-native.slack.com/archives/C03GDP0H023)
 
 ## Overview