v1.0.188

Add lockdown get command to query lockdown values (#658)

* Add lockdown get command to query lockdown values

Add new CLI command `ios lockdown get [<key>] [--domain=<domain>]` that allows
querying specific lockdown values from the device.

Examples:
- `ios lockdown get` - returns all lockdown values
- `ios lockdown get DeviceName` - returns just the device name
- `ios lockdown get ActivationState` - returns activation state
- `ios lockdown get TotalDiskCapacity --domain=com.apple.disk_usage` - query from specific domain

This is similar to pymobiledevice3's `lockdown get-value` command.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* Improve lockdown get command with better error messages and docs

- Simplify key argument parsing
- Add context to error messages (include key/domain names)
- Improve comments explaining each code branch
- Add examples to help text including com.apple.PurpleBuddy domain
- Update README with lockdown get command documentation

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

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Co-authored-by: Claude <noreply@anthropic.com>