[Automatic Releases] "Weekly Release" Initial Workflow, without actually making a new release

[AsherGlick]

We want to have a new github action workflow that runs every Tuesday. It should then in turn call the existing build workflow, instead of duplicating it, and then publish the sub workflow's build artifacts as its own artifacts.

If calling sub-workflows in workflows is not possible for whatever reason, we can always fall back on templated workflows and template compiler scripts.