Re: [sr-dev] [kamailio/kamailio] Adds initial fuzzer for integration with oss-fuzz. (#2660)

@DavidKorczynski: a while ago we cleaned up the root folder, because it ended up with too many directories and files, therefore I would try to avoid starting adding there again. I would suggest to place it in `misc/fuzz`.

Then, the only other requirement is format the commit message according to the contributing guidelines:

* https://github.com/kamailio/kamailio/blob/master/.github/CONTRIBUTING.md#com...

I can merge this pull request manually (and place it in `misc/fuzz`), but have in mind the guidelines for future commits/pull requests, we use the git history to generate the changelogs for releases.