Service account token management UI (Creation)

Implementation Plan:

• We need to re-create the token management in Vue
• Confirm vue router updates and is navigable to this state.
• Confirm renders for instance level and group level versions of the Vue app.
• This issue covers the initial token form, submission, and green alert banner with the token.
• This issue also covers the addition of the newly created token at the bottom of the page.
• Rotation and deletion icons can be shown, but NO-OP. They will be implemented in a follow-up issue.