Move sdk structs to modules/structs (#6905)

* move sdk structs to moduels/structs

* fix tests

* fix fmt

* fix swagger

* fix vendor

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

@@ -1,27 +0,0 @@
-// Copyright 2016 The Gogs 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
-
-import (
-	"fmt"
-)
-
-// Branch represents a repository branch
-type Branch struct {
-	Name   string         `json:"name"`
-	Commit *PayloadCommit `json:"commit"`
-}
-
-// ListRepoBranches list all the branches of one repository
-func (c *Client) ListRepoBranches(user, repo string) ([]*Branch, error) {
-	branches := make([]*Branch, 0, 10)
-	return branches, c.getParsedResponse("GET", fmt.Sprintf("/repos/%s/%s/branches", user, repo), nil, nil, &branches)
-}
-
-// GetRepoBranch get one branch's information of one repository
-func (c *Client) GetRepoBranch(user, repo, branch string) (*Branch, error) {
-	b := new(Branch)
-	return b, c.getParsedResponse("GET", fmt.Sprintf("/repos/%s/%s/branches/%s", user, repo, branch), nil, nil, &b)
-}