Adds a new contextual design token file for breadcrumbs.

Otherwise running `yarn install` inside the bootstrap-vue directory
fails because husky cannot find the `.git` directory. Furthermore we do
not want it to mess with the top-level lefthook config

We are not interested in this part of the deployment tooling, so let's
just remove it.

We don't need to release bootstrap-vue, so let's remove these things.

Wow. So much duplication.

Remove third-party integrations with GitHub Actions, Code Sandbox,
Dependabot, etc. Also remove .browserslistrc because we have our own
top-level config.

Remove changelogs and everything as well.

It respects package.json files array properly

chore: use npm pack instead of yarn pack

See merge request gitlab-org/gitlab-ui!4308



Merged-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Approved-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Co-authored-by: Lukas Eipert <leipert@gitlab.com>

Cleanup bootstrap-vue a little bit

See merge request gitlab-org/gitlab-ui!4285



Merged-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Approved-by: Paul Gascou-Vaillancourt <pgascouvaillancourt@gitlab.com>
Co-authored-by: Lukas Eipert <leipert@gitlab.com>

feat(GlBreadcrumb): Use design tokens for colors

Closes #2679

See merge request gitlab-org/gitlab-ui!4291



Merged-by: Simon Knox <simon@gitlab.com>
Approved-by: Dan MH <dmizzi-harris@gitlab.com>
Approved-by: Scott de Jonge <sdejonge@gitlab.com>
Approved-by: Simon Knox <simon@gitlab.com>
Co-authored-by: GitLab Bot <gitlab-bot@gitlab.com>
Co-authored-by: Thomas Hutterer <thutterer@gitlab.com>

# [84.1.0](gitlab-org/gitlab-ui@v84.0.0...v84.1.0) (2024-06-21)

### Features

* **GlBreadcrumb:** Use design tokens for colors ([948ac03d](gitlab-org/gitlab-ui@948ac03d))