KC-1377: Add --format json support for various Commands

[sshrushanth-ks]

Summary

Added --format json support to trash get, pam rotation list, pam action service list, pam action discover rule list, pam access user list, pam action discover status, pam tunnel list, pam action gateway-info, and pam action saas user.

Changes

• Added --format {detail,json} to trash get
• Added --format {table,json} to pam rotation list, pam action service list, pam action discover rule list, pam action discover status, and pam tunnel list
• Added --format {text,json} to pam action gateway-info and pam action saas user
• Implemented pam access user list (via IdP group list + members) with --format {table,json}
• Emitted clean snake_case JSON payloads (no ANSI coloring); kept existing table/text defaults
• Fixed gateway context selection when --configuration-uid is provided for discovery commands