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/org_member.go

@@ -1,26 +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 (
-	"bytes"
-	"encoding/json"
-	"fmt"
-)
-
-// AddOrgMembershipOption add user to organization options
-type AddOrgMembershipOption struct {
-	Role string `json:"role" binding:"Required"`
-}
-
-// AddOrgMembership add some one to an organization's member
-func (c *Client) AddOrgMembership(org, user string, opt AddOrgMembershipOption) error {
-	body, err := json.Marshal(&opt)
-	if err != nil {
-		return err
-	}
-	_, err = c.getResponse("PUT", fmt.Sprintf("/orgs/%s/membership/%s", org, user), jsonHeader, bytes.NewReader(body))
-	return err
-}