See how Boundary would look with gofumpt applied (#853)

* See how Boundary would look with https://github.com/mvdan/gofumpt applied

Results of running `gofumpt -w -s .`

* Update tools file and Makefile for gofumpt

Co-authored-by: Jeff Mitchell <jeffrey.mitchell@gmail.com>

api/groups/group.gen.go

@@ -57,8 +57,10 @@ func (n GroupReadResult) GetResponseMap() map[string]interface{} {
 	return n.response.Map
 }
 
-type GroupCreateResult = GroupReadResult
-type GroupUpdateResult = GroupReadResult
+type (
+	GroupCreateResult = GroupReadResult
+	GroupUpdateResult = GroupReadResult
+)
 
 type GroupDeleteResult struct {
 	response *api.Response