Remove RuntimeOptions

[kt474]

Summary

Draft PR for now, still need to test which options actually work. Currently more of a POC to show that we don't need the RuntimeOptions class anymore and it's confusing to have this extra "options" class.

Details and comments

Fixes #2300

[ElePT]

Another deprecation slip-up from the runtime programs era. This should have been deprecated when it stopped being useful server-side. At this point, I again see this cleanup as a bugfix rather than a new deprecation, given that the functionality stopped working a long time ago. I am fine with the removal, I would just point out the release note to document it.

[ElePT]

I have found a downstream package that depended on RuntimeOptions. Given that we are in no rush to remove the class, I suggest turning this PR into a deprecation PR instead of a removal. I would keep the typehint changes though, they reflect the current status better.

[kt474]

Since we just deprecated RuntimeOptions in 0.43.0, we can't merge this until 1/26. Just wanted to document that all the integration tests pass from this branch.