Use go's vendoring (#284)

* store dependency's in git

* since we vendor ... rm tech-depts

* aad make target 'vendor' to update vendor folder (manual task)

vendor/code.gitea.io/sdk/gitea/helper.go

@@ -0,0 +1,20 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package gitea
+
+// OptionalBool convert a bool to a bool reference
+func OptionalBool(v bool) *bool {
+	return &v
+}
+
+// OptionalString convert a string to a string reference
+func OptionalString(v string) *string {
+	return &v
+}
+
+// OptionalInt64 convert a int64 to a int64 reference
+func OptionalInt64(v int64) *int64 {
+	return &v
+}