* Disable migration items when mirror is selected

Disable migration items when mirror option is selected to make it more clear that it isn't possible to mirror anything other than code.

* allow wiki checkbox for mirrors

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

* Add a migrat service type switch page

* Improve translations

* remove images

* Fix images

* remove extra create repo button on dashboard

* Follow reviewers' opinions

* Fix frontend lint

* Remove wrong submit file

* Fix tests

* Adjust the size of image

* Apply suggestions from code review

Co-authored-by: 赵智超 <1012112796@qq.com>

* Remove username and password from migration of github/gitlab

* Improve docs

* Improve interface docs

Co-authored-by: 赵智超 <1012112796@qq.com>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

* Initial work

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Implementation

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Fix gitlab and token cloning

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Imports and JS

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Fix test

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Linting

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Generate swagger

Signed-off-by: jolheiser <john.olheiser@gmail.com>

* Move mirror toggle and rename options

Signed-off-by: jolheiser <john.olheiser@gmail.com>

Co-authored-by: Lauris BH <lauris@nix.lv>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>