README: add an OSS-Fuzz badge

Since bug reports, backtraces, coverage reports and build logs are scattered
across at least four different places and there is no publicly available dashboards
the badge can point to, let's just point it to the build logs, which hopefully are going to be
a little bit more usable once https://github.com/google/oss-fuzz/issues/2690 is
addressed.

diff --git a/README.md b/README.md
index 3cde9d201870ffce6b93b31012050c8fae11fa8d..688d24b498c1f87ba55e85b983b503f1092adf4f 100644 (file)
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@
 [![Semaphore CI Build Status](https://semaphoreci.com/api/v1/projects/28a5a3ca-3c56-4078-8b5e-7ed6ef912e14/443470/shields_badge.svg)](https://semaphoreci.com/systemd/systemd)<br/>
 [![Coverity Scan Status](https://scan.coverity.com/projects/350/badge.svg)](https://scan.coverity.com/projects/350)<br/>
 [![Fuzzit Status](https://app.fuzzit.dev/badge?org_id=systemd&branch=master)](https://app.fuzzit.dev/orgs/systemd/dashboard)<br/>
+[![OSS-Fuzz Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/systemd.svg)](https://oss-fuzz-build-logs.storage.googleapis.com/index.html)<br/>
 [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/1369/badge)](https://bestpractices.coreinfrastructure.org/projects/1369)<br/>
 [![Travis CI Build Status](https://travis-ci.org/systemd/systemd.svg?branch=master)](https://travis-ci.org/systemd/systemd)<br/>
 [![Language Grade: C/C++](https://img.shields.io/lgtm/grade/cpp/g/systemd/systemd.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/systemd/systemd/context:cpp)<br/>