Fix AsyncChat to handle unmapped models (fixes #42)

[PiotrCzapla]

Apply the same fix from #68 to AsyncChat._call() method. Wraps get_model_info() in try-except to register unknown models before querying their info.

[PiotrCzapla]

The failed test are due to nbdev v3 not being released, I had the same issue in solveit, fixed it by pip installing main from nbdev.

The removal of settings.ini made cachy misbehave, it looks for the root of the project in settings.ini

[jph00]

Thanks! What's needed to move this from draft? BTW want to see if there's some dupe code you can factor out across the 2 implementations?

[PiotrCzapla]

It is ready, cachy wasn't working with nbdev3, I see that you fixed cachy already, make sense.
If you would release nbdev3 and run the pr it would run without cachy. To save some tokens and time I converted it to a draft.

I would love unify async and sync code, I'll make another pr.

[nev-ball]

The sync Chat._call method also has the following (just before calling completion):

        if self.api_base: kwargs['api_base'] = self.api_base
        if self.api_key: kwargs['api_key'] = self.api_key

You could include that in this PR too so that azure models are supported at the same time

[PiotrCzapla]

@nev-ball good catch, thx for letting me know, the refactor is being developed here: #101

[jph00]

Suggested change

	try:
	model_info = get_model_info(self.model)
	try: model_info = get_model_info(self.model)

Minor FYI - no need to use 2 lines for stuff like this.