github-ci: add workflow to run fuzzing testing

Tarantool has been integrated to OSS-Fuzz infrastructure, and
implemented fuzzers are passed now [1]. Patch adds a new workflow that
will execute fuzzers on each push to a master branch using OSS-Fuzz
infrastructure [2]. To reduce a load on testing machines job triggers on
changes in directory with Tarantool's source code, fuzzers source code,
corpus files and GH Actions workflow file for fuzzing.

OSS-Fuzz provides web interface with fuzzing statistics, found errors
and other useful information. Access to OSS-Fuzz web interface is
available for persons whose email addresses specified in project.yml,
committed to oss-fuzz repository [4]. Bugs found in OSS-Fuzz reported to
bugtracker [5].

Using fuzzing testing documented in Tarantool's wiki [6].

1. https://github.com/google/oss-fuzz/pull/4723
2. https://google.github.io/oss-fuzz/getting-started/continuous-integration/#integrating-into-your-repository
3. https://google.github.io/oss-fuzz/further-reading/clusterfuzz/
4. https://github.com/google/oss-fuzz
5. https://bugs.chromium.org/p/oss-fuzz/issues/list
6. https://github.com/tarantool/tarantool/wiki/Fuzzing

Follows up #1809