Add initial support for pickletensor models to F5-TTS

[SilyNoMeta]

Only safetensors models are detected by default, while pickletensor files seems to work decently just by scanning them.

Tested against @RASPAUDIO french model available here : https://huggingface.co/RASPIAUDIO/F5-French-MixedSpeakers-reduced, who do not provide safetensors files.

[erew123]

Hi @SilyNoMeta

Happy new year! I see youve submitted quite a few PR's, thanks for getting involved! Im going to be working my way through a backlog of issues tickets and PR's so it will take me a while to do that, depending on my availability.

Re pickle files, I have no issue in principle, however do you think it may be good to print a warning out at the console when a pickle file is being loaded, just to say that it could be dangerous and to do so at your own risk. Perhaps we could link to this https://huggingface.co/docs/hub/en/security-pickle

Perhaps even a link to something like this https://huggingface.co/spaces/safetensors/convert

As I say, working my way through lots of other tickets/PS's so will be looking at the others sometime soon.

Thanks

[SilyNoMeta]

Hi @erew123
Happy new year to you too 🎆

No, you're right, pickles are not really a priority ! Especially when you look at the huggingface article.
I will probably rework the conditions on my fork so that it loads pickles after safetensors and log a warning as you said, but I don't want to open the pandora's box on your project, so you might just close this PR.

Don't worry about the others PRs, they are not going anywhere so take your time, I might even add some 😄 (but I'm really getting close to a it's enough for my project needs so I will naturally slow down)

[erew123]

Hey @SilyNoMeta Thanks for adding the warning in. Im happy enough to pull this in, but may leave it undocumented until I get round to a later PR and probably update some documentation.

Thanks

[SilyNoMeta]

No problem 😄