Add enable/disable commands for Hive records

[maximelb]

Summary

• Adds hive enable and hive disable subcommands that toggle usr_mtd.enabled without touching record data
• Adds the same enable/disable commands to all hive shortcut groups (secret, lookup, fp, playbook, etc.)
• Shortcut for the clunky echo '{"usr_mtd": {"enabled": false}}' | limacharlie hive set ... pattern

Usage

# Direct hive commands
limacharlie hive disable --hive-name dr-general --key my-rule
limacharlie hive enable --hive-name dr-general --key my-rule

# Via shortcut groups
limacharlie secret disable --key my-secret
limacharlie lookup enable --key my-lookup

Test plan

• Unit tests for hive enable and hive disable
• Unit tests for shortcut group enable/disable (via secret)
• All 959 unit tests pass

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