Terminal Chat: Add support for custom AI providers like openrouter #19623
Description
Description of the new feature
Current list of providers has only three options which is limiting.
It would be much better if we can other oprions like openrouter.ai
vs code and powertoys already support that
i tried the same way of powertoys as said here (microsoft/PowerToys#32960 (comment)) using azure ai option but was not worked here
Proposed technical implementation details
No response