-fsanitize=fuzzer-no-link makes it workable to build a library with fuzzing
enabled, and let the fuzzing test program explicitly trigger the fuzzing.

This allows fuzzing to trace cmp instructions to guide the fuzzing to
improve results.

* Add: fuzzer files and modifications in config & compil
* add configure.ac change
* add minimize-corpus.sh
* add fuzzing directory and readme
* add to check if CC support libfuzzer
* Make workflow dump the crash POC
* Add debugging information
* Run fuzzing only once a week for now

Co-authored-by: kmamadoudram <[email protected]>
Co-authored-by: yocvito <[email protected]>
Co-authored-by: Samuel Thibault <[email protected]>