feat: Add QEMU Strategy
Adds labgrid QEMUStrategy class that can power a QEMU instance on and wait until booted.
Supports states:
- "unknown". The starting state when the driver is activated.
- "off". The QEMU instance is not running.
- "accessible". The QEMU instance is running and has booted.
Since this relies on other not yet completed components to be tested, I tested the strategy manually outside of labgrid-rules.
Edited by Luke Hackwell