BYOC mcp

[KevyVo]

Description

Added support for the MCP server to deploy to AWS and GCP BYOC. The best known way to setup BYOC right is using an MCP concept using prompts.

AWS BYOC Prompt:

• Will check if the AWS ID and secret/ or AWS Profile are valid or not
• Can use AWS Creds or AWS profile
• Will check the user subscription tier

GCP BYOC Prompt:

• Will check if the User has gcloud or ADC install and is authenticated or not
• Will check the user subscription tier

Added checks on all the tools to guard again unset providers.

Docs: DefangLabs/defang-docs#281

Linked Issues

#1215

Checklist

• I have performed a self-review of my code
• I have added appropriate tests
• I have updated the Defang CLI docs and/or README to reflect my changes, if necessary

[lionello]

Nits