Implement Static Corpus Feature.

Implement a new mode for Fuzzilli called Static Corpus.
This allows Fuzzilli to Fuzz with a static corpus, i.e. Fuzzilli will
not add new programs to the corpus even if they create new coverage.
This can be useful to explore previously found programs that are
interesting, e.g. programs that exhibit flaky crashes.

Add entry for CVE-2022-42928

Fuzzilli Version 0.9.1

Fuzzilli is now open source!