docs: Add a firecracker installation guide
Add info on setting up kata with firecracker.
Fixes:
- `qemu`
- `cloud-hypervisor`
- `firecracker`
+
+ In the case of `firecracker` the use of a block device `snapshotter` is needed
+ for the VM rootfs. Refer to the following guide for additional configuration
+ steps:
+ - [Setup Kata containers with `firecracker`](how-to-use-kata-containers-with-firecracker.md)
- `ACRN`
While `qemu` , `cloud-hypervisor` and `firecracker` work out of the box with installation of Kata,
