feat: add schema and data options for user management commands

[ramya18101]

🔧 Changes

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

auth0 users search

• --schema: prints the GET /users query-parameter schema and exits.

auth0 users create

• --schema: prints the POST /users 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 users update

• --schema: prints the PATCH /users/{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, --email, --connection-name, etc.) on both create and update. Also fixes trailing quotes on --blocked examples in the update command help text.

📚 References

• feat: enhance role management commands with schema and data options #1659

🔬 Testing

# Schema discovery
auth0 users search --schema
auth0 users search --schema --json
auth0 users create --schema
auth0 users update --schema

# JSON input
auth0 users create --data '{"email":"john@example.com","password":"Test1234!","connection":"Username-Password-Authentication"}' --json
auth0 users update <user-id> --data '{"name":"John Doe"}' --json
echo '{"blocked":true}' | auth0 users update <user-id> --json

# Mutual exclusion guard
auth0 users create --data '{"email":"x@x.com"}' --email "y@y.com"  # 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