feat: enhance role management commands with schema and data options

[ramya18101]

🔧 Changes

Adds --schema, --data, and --query flags to the auth0 roles management commands, making them usable by agents and automation tooling without interactive prompts.

auth0 roles list

• --schema: prints the GET /roles query-parameter schema and exits.
• --query '{"name_filter":"..."}': filters results by passing a JSON object directly to the API; any documented parameter works immediately.

auth0 roles create

• --schema: prints the POST /roles payload schema and exits.
• --data <json|@file|stdin>: accepts a full JSON payload, validates it against the schema, and sends it — skipping all interactive prompts.

auth0 roles update

• --schema: prints the PATCH /roles/{id} payload schema and exits.
• --data <json|@file|stdin>: same as create, applied as a partial update.

--data is mutually exclusive with individual field flags (--name, --description) on both create and update.

📚 References

• Support new flags in actions #1630

🔬 Testing

Unit tests pass (make test-unit). Manual smoke tests:

# Schema discovery
auth0 roles list --schema
auth0 roles list --schema --json
auth0 roles create --schema
auth0 roles update --schema

# Query filtering
auth0 roles list --query '{"name_filter":"admin"}' --json

# JSON input
auth0 roles create --data '{"name":"test-role","description":"a test role"}' --json
auth0 roles update <role-id> --data '{"description":"updated description"}' --json
echo '{"name":"updated-role"}' | auth0 roles update <role-id> --json

# Mutual exclusion guard
auth0 roles create --data '{"name":"x"}' --name "y"  # must error

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[developerkunal]

LGTM