* feat: Add AWS credentials file support
- Automatically reads AWS credentials from ~/.aws/credentials
- Supports AWS_PROFILE and AWS_SHARED_CREDENTIALS_FILE environment variables
- Adds support for temporary credentials with session tokens
- Maintains backward compatibility with existing credential methods
- Follows standard AWS credential precedence order
Based on PR #14460 by @lefth with the following improvements:
- Fixed variable naming to match existing code (access_key vs aws_access_key)
- Added session token support for temporary credentials
- Integrated credential discovery directly into prompts.yml
- Added comprehensive tests
- Added documentation
Closes#14382
* fix ansible lint
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Co-authored-by: Jack Ivanov <17044561+jackivanov@users.noreply.github.com>
