Enhanced Documentation for MethodAWS CLI Tool

TL;DR

Improved documentation for the MethodAWS CLI tool, adding a comprehensive resource table, new command examples, and updating command names for consistency.

What changed?

• Added a comprehensive resource table in README.md showing all supported AWS resources and their available commands
• Expanded the examples section with more use cases including STS, EKS, and S3 operations
• Added documentation for the EKS creds command that generates Kubernetes credentials
• Renamed S3 commands for better consistency:
  • ls → list
  • externalenumerate → external
• Updated output format options to include YAML alongside JSON and signal formats
• Fixed typos and improved command descriptions throughout the documentation