Remove modalai_voxl2 and qurt from CI exclusion lists and add
container overrides to use the private ghcr.io/px4/px4-dev-voxl2
image which contains the Qualcomm Hexagon SDK.
- Add voxl2 build group with x64 runner for cross-compilation
- Add GHCR credentials to workflow for private container pull
- Add packages:read permission to workflow
- Auto-build libfc_sensor.so stub during cmake configure
- Handle missing .px4/.elf gracefully in artifact packaging
Signed-off-by: Ramon Roche <mrpollo@gmail.com>