chore: initialize Gitea v1.27.2 fork

Includes direct password setup links in registration emails.

Assisted-by: Codex:GPT-5

modules/structs/fork.go

@@ -0,0 +1,12 @@
+// Copyright 2016 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package structs
+
+// CreateForkOption options for creating a fork
+type CreateForkOption struct {
+	// organization name, if forking into an organization
+	Organization *string `json:"organization"`
+	// name of the forked repository
+	Name *string `json:"name"`
+}