Support 'Anthropic Console account'

[jjaychen1e]

Currently we only support login CC with subscription, could we supprot Anthropic Console account like CC CLI?

❯ /login


 Claude Code can be used with your Claude subscription or billed based on API usage through your Console account.

 Select login method:

   1. Claude account with subscription · Pro, Max, Team, or Enterprise

 ❯ 2. Anthropic Console account · API usage billing

   3. 3rd-party platform · Amazon Bedrock, Microsoft Foundry, or Vertex AI