Implement Redesigned Login Page
This epic collects the efforts and Issues around the redesigned Login Page, initiated by @emilybauman and @jannik_lehmann [Design Issue](https://gitlab.com/gitlab-org/gitlab/-/issues/365763) | Screen | | ------ | | ![screenshot](https://gitlab.com/gitlab-org/gitlab/uploads/dd8f6d43044e47434df2ea9e06d91738/Screen_Shot_2022-06-23_at_11.36.36_AM.png) | DRI'S: @emilybauman @jannik_lehmann Feature-Flag: [restyle_login_page](https://gitlab.com/gitlab-org/gitlab/-/issues/368387)
epic