A full restructure

pkg/storage/storage.go

@@ -0,0 +1,15 @@
+package storage
+
+import "io"
+
+type ObjectStorage interface {
+	List(objectPath string) ([]ObjectDescription, error)
+	Get(path string) (io.Reader, error)
+	Put(path string, object io.Reader) error
+}
+
+type ObjectDescription struct {
+	Name    string
+	Md5sum  string
+	Murmur3 string
+}