treewide: introduce osbase package and move things around

All except localregistry moved from metropolis/pkg to osbase,
localregistry moved to metropolis/test as its only used there anyway.

Change-Id: If1a4bf377364bef0ac23169e1b90379c71b06d72
Reviewed-on: https://review.monogon.dev/c/monogon/+/3079
Tested-by: Jenkins CI
Reviewed-by: Serge Bazanski <serge@monogon.tech>
diff --git a/metropolis/proto/common/BUILD.bazel b/metropolis/proto/common/BUILD.bazel
index 10f7f84..f895f44 100644
--- a/metropolis/proto/common/BUILD.bazel
+++ b/metropolis/proto/common/BUILD.bazel
@@ -7,7 +7,7 @@
     srcs = ["common.proto"],
     visibility = ["//metropolis:__subpackages__"],
     deps = [
-        "//metropolis/pkg/logtree/proto:proto_proto",
+        "//osbase/logtree/proto:proto_proto",
         "//version/spec:spec_proto",
         "@com_google_protobuf//:timestamp_proto",
     ],
@@ -19,7 +19,7 @@
     proto = ":common_proto",
     visibility = ["//metropolis:__subpackages__"],
     deps = [
-        "//metropolis/pkg/logtree/proto",
+        "//osbase/logtree/proto",
         "//version/spec",
     ],
 )