* feat: add MILLI_USD constant and update pricing for deepseek services
* feat: add support for new Gemini model version 'gemini-2.0-flash-thinking-exp-01-21'
* feat: support claude and gemini in vertex ai
* fix: do not show api key field in channel page when the type is VertexAI
* fix: update getToken function to include channelId in cache key