Document and test new database extraction

[litghost]

#125 adding a good deal of new code that needs documentation, including file formats. There is also very little testing of the new code.

[mithro]

@litghost What is the status of this? I think there might actually be documentation for some of the file formats now?

[litghost]

No new documentation has been written since this bug was filled

[tmichalak]

@litghost it's hard to grasp what is expected to be done for this issue.
Can we maybe add a check list of things to do? Or create separate issues?

[litghost]

I think this issue is really highlights how little testing and documentation exists on some of the larger fuzzers. Smaller issues could help here.