Fix some mirror bugs (#18649)

* Fix some mirror bugs

* Remove unnecessary code

* Fix lint

* rename stdard url

* Allow more charactors in git ssh protocol url

* improve the detection

* support ipv6 for git url parse

* Fix bug

* Fix template

* Fix bug

* fix template

* Fix tmpl

* Fix tmpl

* Fix parse ssh with interface

* Rename functions name

Co-authored-by: zeripath <art27@cantab.net>

models/repo/mirror.go

@@ -19,12 +19,6 @@ import (
 // ErrMirrorNotExist mirror does not exist error
 var ErrMirrorNotExist = errors.New("Mirror does not exist")
 
-// RemoteMirrorer defines base methods for pull/push mirrors.
-type RemoteMirrorer interface {
-	GetRepository() *Repository
-	GetRemoteName() string
-}
-
 // Mirror represents mirror information of a repository.
 type Mirror struct {
 	ID          int64       `xorm:"pk autoincr"`