Add fuzz-testing

[harshitasao]

Proposal

Fuzz testing or Fuzzing is a Black Box software testing technique, which basically consists in finding implementation bugs using malformed/semi-malformed data injection in an automated fashion.

Integrate the project with OSS-Fuzz by following the instructions here.

Part of #6085

Use-Case

To increase security of the project.

Is this a feature you are interested in implementing yourself?

Yes

Anything else?

Maintainers help is highly appreciated. For example, helping in identifying the components where fuzz testing will be added.