add support perplexity ai free

[funmolde]

Hello , please add support perplexity ai free
Thank you

[henrique-coder]

Hello @funmolde, thank you for the suggestion.

I plan to add this feature soon so that free users can utilize the free standard AI model provided by Perplexity, and perhaps even an anonymous mode without needing login credentials.

As soon as these new features are ready, I will announce it in this current Issue.