Support injecting container images for development

This adds the LoadImage RPC and an accompanying subcommand
to the debug API which allows loading images into
an existing Metropolis node for
development or testing.

Change-Id: I51d802630ae4c95fb874e01bfb6510ab69c322e1
Reviewed-on: https://review.monogon.dev/c/monogon/+/219
Reviewed-by: Sergiusz Bazanski <serge@monogon.tech>
diff --git a/metropolis/node/core/BUILD.bazel b/metropolis/node/core/BUILD.bazel
index cb82fdd..e0d6d87 100644
--- a/metropolis/node/core/BUILD.bazel
+++ b/metropolis/node/core/BUILD.bazel
@@ -26,6 +26,8 @@
         "//metropolis/pkg/supervisor:go_default_library",
         "//metropolis/pkg/tpm:go_default_library",
         "//metropolis/proto/api:go_default_library",
+        "@com_github_containerd_containerd//:go_default_library",
+        "@com_github_containerd_containerd//namespaces:go_default_library",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//codes:go_default_library",
         "@org_golang_google_grpc//status:go_default_library",