Adds a windows container build and a windows client build.
Outstanding issues:
- I'm not sure if `workflow_dispatch` works. Based on [this PR](https://github.com/go-gitea/gitea/pull/28163) it seems like it should, but I don't see a button. It might only work after merging into the default branch.
- The windows build container is building dioxus from git HEAD because there is an unreleased bugfix we are depending on. We should revert this to a versioned release (maybe using `binstall`) once they cut 0.7.2
Reviewed-on: #2
restitux
sam