Add OSS-Fuzz fuzzing badge. (#8552)
Add OSS-Fuzz fuzzing badge. (#8552)

Description: Adds OSS-Fuzz fuzzing badge, see https://google.github.io/oss-fuzz/getting-started/new-project-guide/#status-badge
Risk Level:
Testing: NA
Docs Changes: Adds OSS-Fuzz fuzzing badge
Release Notes: NA

Signed-off-by: Abhishek Arya <792883c4eebc3b69fa15b94e87456cf2c566c202@chromium.org>
envoyproxy/envoy-wasm,envoyproxy/envoy,envoyproxy/envoy,istio/envoy,eklitzke/envoy,envoyproxy/envoy-wasm,lyft/envoy,eklitzke/envoy,lizan/envoy,lyft/envoy,lizan/envoy,istio/envoy,envoyproxy/envoy,jrajahalme/envoy,jrajahalme/envoy,envoyproxy/envoy,eklitzke/envoy,envoyproxy/envoy,istio/envoy,istio/envoy,lizan/envoy,jrajahalme/envoy,lyft/envoy,envoyproxy/envoy,jrajahalme/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,lizan/envoy,istio/envoy,envoyproxy/envoy,envoyproxy/envoy,lizan/envoy,envoyproxy/envoy-wasm,eklitzke/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,istio/envoy,lyft/envoy,jrajahalme/envoy,istio/envoy,eklitzke/envoy,envoyproxy/envoy,eklitzke/envoy,jrajahalme/envoy,lyft/envoy,lizan/envoy,lyft/envoy,envoyproxy/envoy