Migrate project creation form to vue
As part of a https://gitlab.com/gitlab-org/gitlab/-/issues/499697 we're migrating project creation form to Vue.
All the changes will live behind the FF `new_project_creation_form` while it's in progress.
## Plan
- [x] First step + FF
- gitlab!178859+s
- [X] Breadcrumbs
- gitlab!179711+s
- [x] Options validation
- gitlab!179733+s
- [ ] Show import source icons that available
- [x] Command line project creation
- gitlab!179702+s
- [x] Navigation between first two steps
- gitlab!180221+s
- gitlab!180740+s
- gitlab!181310+s
- [x] Blank project form -> gitlab!184077 is split up
- gitlab!185616+s
- gitlab!187139+s
- gitlab!192230+s
- gitlab!188110+s
- gitlab!190079+s
- gitlab!192230+s
- gitlab!192230+s
- gitlab!197633+s
- [ ] CI/CD for external repository form - https://gitlab.com/gitlab-org/gitlab/-/issues/567833
- gitlab!210347+s
- [ ] Template list - https://gitlab.com/gitlab-org/gitlab/-/issues/567816
- [ ] Template project form - https://gitlab.com/gitlab-org/gitlab/-/issues/567817
- [x] Import choice
- gitlab!181484+s
- [x] Import from GitHub
- gitlab!181003+s
- [x] ~~Import from Bitbucket Cloud~~ - no changes needed, see https://gitlab.com/gitlab-org/gitlab/-/issues/526305
- [x] Import from Bitbucket Server
- gitlab!181024+s
- [x] Import from FogBugz
- gitlab!181100+s
- [x] Import from Gitea
- gitlab!181105+s
- [x] Import from Manifest file
- gitlab!185794+s
- [x] Import from URL
- gitlab#526304+s
- gitlab#536989+s
- gitlab!189024+s
- [x] Import from export file
- gitlab!180970+s
- [ ] Add tests for `app/assets/javascripts/projects/new_v2/components/project_destination_select.vue` - https://gitlab.com/gitlab-org/gitlab/-/issues/567818
- [ ] Review tests and add missing ones if any
- [ ] Cleanups, see a comment https://gitlab.com/gitlab-org/gitlab/-/merge_requests/187139#note_2442789304 - https://gitlab.com/gitlab-org/gitlab/-/issues/567818
- gitlab!181873+s
- [ ] gitlab~10954568 review
- [ ] Ping JiHo on [their disclaimer checkboxes](https://gitlab.com/gitlab-org/gitlab/-/blob/master/app/views/projects/_new_project_fields.html.haml#L107) - https://gitlab.com/gitlab-org/gitlab/-/issues/567838
epic