[Fuzzing] add cifuzz workflows

[0x34d]

Add CIFuzz for PR fuzzing. This will fuzz the PR to find bugs in it.

In the future, if CIFuzz or oss-fuzz fail, the main reason could be https://github.com/google/oss-fuzz/pull/10729/files#diff-11e8ba3b20d92c1a488036e14076d4b1bf96313224427f03a8df69d187205247R21 line.

Update for DCO test: I used the GitHub's built-in editor for this PR.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (8c70d40) 73.13% compared to head (11904a9) 73.07%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #509 +/- ## ========================================== - Coverage 73.13% 73.07% -0.06% ========================================== Files 80 80 Lines 5059 5059 ========================================== - Hits 3700 3697 -3 - Misses 1216 1219 +3 Partials 143 143 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[pmazzini]

Please sign the commit. Example:

• git rebase HEAD~1 --signoff
• git push --force-with-lease origin cifuzz.yml

[github-advanced-security[bot]]

This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.

[0x34d]

@pmazzini ping.