AppleHV enablement pass #2

* Use vfkit command line assembly
* Inject ignition file into guest using http over vsock
* Ready notification through use of vsock

[NO NEW TESTS NEEDED]

Signed-off-by: Brent Baude <bbaude@redhat.com>

vendor/github.com/goccy/go-json/internal/encoder/map113.go

@@ -0,0 +1,9 @@
+//go:build go1.13
+// +build go1.13
+
+package encoder
+
+import "unsafe"
+
+//go:linkname MapIterValue reflect.mapiterelem
+func MapIterValue(it *mapIter) unsafe.Pointer