Fix storage modules types and interfaces to compile server

pkg/qpstore/qpstore.go

@@ -0,0 +1,16 @@
+package qpstore
+
+type Visibles struct{}
+
+type StorageQP struct{}
+
+func NewStore(v *Visibles) (Storage, error) {
+	s := StorageQP{}
+
+	return &s, nil
+}
+
+func (s *StorageQP) SaveQueryPack(tgz []byte, sessionID int) (storagePath string, error error) {
+	// TODO implement
+	return "", nil
+}