Add tests generated by h26forge

[ceyusa]

I wonder if we could add H.264 tests generated by https://github.com/h26forge/h26forge

I haven't tried it myself, but it looks promising.

[mdimopoulos]

Hi. Do you refer to the test vectors they use (https://www.itu.int/net/ITU-T/sigdb/spevideo/VideoForm-s.aspx?val=102002641)?
Or do you mean the type of testing that the tool implements? Or something else?

[ceyusa]

I was thinking something like to generate a defined list of broken streams with the tool and run them with fluster.