feat: add dynamic openrouter model list

[wonderwhy-er]

Slowly adding features from my fork

List of things that were done:

• Added getOpenRouterModels to constants.ts to get dynamic list of all OpenRouter models
• Labels also contain prices and context sizes
• Made all dynamic lists load in parallel to speed up getting them
• There was a bug that some models are stuck in model selector no matter what provider is chosen, fixed by chnaging what keys are used for rendering, something was caching wrong in React

Optional: I am not sure about is price and context size added to label.
I think its useful information but its not super readable at the moment.

[wonderwhy-er]

OpenAI also has similar endpoint
https://platform.openai.com/docs/api-reference/authentication#:~:text=curl-,https%3A//api.openai.com/v1/models,-%5C%0A%20%20%2DH%20%22Authorization

Also Groq too https://console.groq.com/docs/api-reference#models-list

Antropic on other hand does not provide such list

[champ2050]

Could someone kindly review this and merge it? There are several open PRs that need to be reviewed and merged.

[wonderwhy-er]

I just realized there is better place for this code, I will refactor it, no need to review/merge yet

[wonderwhy-er]

I will merge it with my other API Keys related PR, will close this one

[wonderwhy-er]

Closed as it was merged with #251