Create daily CI workflow

[viswavi]

Description

This PR deletes the current "ci.yml" continuous integration workflow and instead creates two workflows, "pull_request_ci.yml" (which runs as a gate for all pull requests) and "daily_ci.yml" (which runs at 9am EST every morning). This will hopefully help us identify breaking library updates or broken code that sneaked into master sooner.

References

Followed https://docs.github.com/en/actions/using-workflows/reusing-workflows to guide this implementation.

Blocked by

N/A