Theme branches

[Decipher]

Is your feature request related to a problem? Please describe.
As a user I want to be able to start with a theme pre-installed

Describe the solution you'd like

• Add CI based theme branch workflows; CI will make a new branch each time develop is updated, and re-apply the theme.

Describe alternatives you've considered
N/A

Additional context
https://github.com/druxt/quickstart/blob/develop/.github/workflows/theme-tailwindcss.yml
https://github.com/druxt/quickstart/blob/develop/.github/workflows/theme-bootstrap-vue.yml