Merge pull request #1248 from jluebbe/fuzzing

README: add OSS-Fuzz badge

README.rst

@@ -5,7 +5,7 @@
 RAUC - Robust Auto-Update Controller
 ====================================
 
-|LGPLv2.1| |CI_branch| |Codecov_branch| |Coverity| |codeql| |Documentation| |Matrix| |CII Best Practices| |Repology|
+|LGPLv2.1| |CI_branch| |Codecov_branch| |Coverity| |codeql| |OSS-Fuzz| |Documentation| |Matrix| |CII Best Practices| |Repology|
 
 RAUC controls the update process on embedded Linux systems. It is both a target
 application that runs as an update client and a host/target tool
@@ -313,6 +313,8 @@ https://www.gnu.org/licenses/.
    :target: https://matrix.to/#/#rauc:matrix.org
 .. |codeql| image:: https://github.com/rauc/rauc/workflows/CodeQL/badge.svg
    :target: https://github.com/rauc/rauc/actions/workflows/codeql.yml
+.. |OSS-Fuzz| image:: https://oss-fuzz-build-logs.storage.googleapis.com/badges/rauc.svg
+   :target: https://oss-fuzz-build-logs.storage.googleapis.com/index.html#rauc
 .. |CII Best Practices| image:: https://www.bestpractices.dev/projects/5075/badge
    :target: https://www.bestpractices.dev/projects/5075
 .. |Repology| image:: https://repology.org/badge/tiny-repos/rauc.svg?header=distribution%20packages