Fix project infrastructure or find new tooling (especially testing)

[martypdx]

publishing packages:
[] Not able to get scripted publishing working. Changesets and Rush don't work.

Vitest issues (need to upgrade and check these again)
[x] many solved by running on a repo basis, not per project
[ ] still need to have browser vs node env
[ ] The watch system can lose track of files that need to be rerun if it involves intra-package dependencies.
[ ] Changing the config to restarts the tests but doesn't actually apply the setting (so update: false won't stop it from updating the snapshots)
[ ] Certain file structures can cause snapshots to break. Snapshots can't handle /html/ comments.
[ ] VSCode extension gets stuck with stale results (false positives and negatives) or won't rerun correctly