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/cli/metroctl/core/install.go b/metropolis/cli/metroctl/core/install.go
index 223e773..4175e22 100644
--- a/metropolis/cli/metroctl/core/install.go
+++ b/metropolis/cli/metroctl/core/install.go
@@ -9,10 +9,10 @@
 
 	"google.golang.org/protobuf/proto"
 
-	"source.monogon.dev/metropolis/pkg/blockdev"
-	"source.monogon.dev/metropolis/pkg/fat32"
-	"source.monogon.dev/metropolis/pkg/gpt"
 	"source.monogon.dev/metropolis/proto/api"
+	"source.monogon.dev/osbase/blockdev"
+	"source.monogon.dev/osbase/fat32"
+	"source.monogon.dev/osbase/gpt"
 )
 
 type MakeInstallerImageArgs struct {