added libAFL to Security section

README.md

@@ -298,6 +298,7 @@ See also [A comparison of operating systems written in Rust](https://github.com/
 
 ### Security tools
 
+* [AFLplusplus/LibAFL](https://github.com/AFLplusplus/LibAFL) - Advanced Fuzzing Library - Slot your Fuzzer together in Rust! Scales across cores and machines. For Windows, Android, MacOS, Linux, no_std, etc. [![build and test](https://github.com/AFLplusplus/LibAFL/actions/workflows/build_and_test.yml/badge.svg)](https://github.com/AFLplusplus/LibAFL/actions/workflows/build_and_test.yml)
 * [arvancloud/libinjection-rs](https://github.com/arvancloud/libinjection-rs) — Rust bindings for [libinjection](https://github.com/client9/libinjection) [![build badge](https://api.travis-ci.org/arvancloud/libinjection-rs.svg?branch=master)](https://travis-ci.org/arvancloud/libinjection-rs)
 * [Cherrybomb](https://github.com/blst-security/cherrybomb) - Stop half-done API specifications with a CLI tool that helps you avoid undefined user behaviour by validating your API specifications.
 * [epi052/feroxbuster](https://github.com/epi052/feroxbuster) - A simple, fast, recursive content discovery tool written in Rust (