Move sdk structs to modules/structs (#6905)

* move sdk structs to moduels/structs

* fix tests

* fix fmt

* fix swagger

* fix vendor

modules/structs/git_hook.go

@@ -0,0 +1,20 @@
+// Copyright 2019 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 structs
+
+// GitHook represents a Git repository hook
+type GitHook struct {
+	Name     string `json:"name"`
+	IsActive bool   `json:"is_active"`
+	Content  string `json:"content,omitempty"`
+}
+
+// GitHookList represents a list of Git hooks
+type GitHookList []*GitHook
+
+// EditGitHookOption options when modifying one Git hook
+type EditGitHookOption struct {
+	Content string `json:"content"`
+}