Add design-system component library to Vault UI

[Monkeychip]

This PR allows us to use the Design Systems component package in the UI. If you want to test this out, try out the breadcrumb component on any hbs file.

<Hds::Breadcrumb>
  <Hds::Breadcrumb::Item @text="secrets" @icon="org" />
  <Hds::Breadcrumb::Item @text="pki" @current={{true}} />
</Hds::Breadcrumb>

This PR setups the ability to use a design-systems component, however it's a much larger project to start replacing current components (like our key-value aka breadcrumb component) with the design systems component. Stay tuned.