Add support for create image & start VM.

Add a make-image command to create an empty VM image.

Add --start <image> option to start a CompOS VM & then connect to it,
rather than some existing VM. Also add --log to capture the VM output
to file.

This is mostly for test purposes, and to allow me to experiment with
using IVirtualizationService from C++ before I start adding it to
odsign.

Bug: 193603140
Test: compos_key_cmd make-instance <if>
Test: compos_key_cmd --log <log> --start <if> generate <blob> <key>
Test: compos_key_cmd --log <log> --start <if> verify <blob> <key>
Change-Id: I32419837ac4cf0c69180382fa7eaee591056f85d
diff --git a/compos/compos_key_cmd/Android.bp b/compos/compos_key_cmd/Android.bp
index 1d889c6..e0584f4 100644
--- a/compos/compos_key_cmd/Android.bp
+++ b/compos/compos_key_cmd/Android.bp
@@ -12,6 +12,7 @@
     ],
 
     shared_libs: [
+        "android.system.virtualizationservice-ndk",
         "compos_aidl_interface-ndk",
         "libbase",
         "libbinder_rpc_unstable",