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/test/nanoswitch/BUILD.bazel b/metropolis/test/nanoswitch/BUILD.bazel
index a3163f5..4954480 100644
--- a/metropolis/test/nanoswitch/BUILD.bazel
+++ b/metropolis/test/nanoswitch/BUILD.bazel
@@ -13,10 +13,10 @@
         "//metropolis/node",
         "//metropolis/node/core/network/dhcp4c",
         "//metropolis/node/core/network/dhcp4c/callback",
-        "//metropolis/pkg/logtree",
-        "//metropolis/pkg/socksproxy",
-        "//metropolis/pkg/supervisor",
-        "//metropolis/test/launch",
+        "//osbase/logtree",
+        "//osbase/socksproxy",
+        "//osbase/supervisor",
+        "//osbase/test/launch",
         "@com_github_google_nftables//:nftables",
         "@com_github_google_nftables//expr",
         "@com_github_insomniacslk_dhcp//dhcpv4",