Condense gleaner nabu and scheduler into one monorepo

[C-Loftus]

I think long term we will want to condense these three projects into one monorepo.

It is difficult to test a new feature in one project that affects behavior in both nabu and gleaner since it requires us to make changes in one project, merge them into that project's main branch, and then test against that in the other one. This adds a lot of extra ci/cd time

For instance, right now I am having an issue where I need to change all 3 and it makes it difficult to keep things in sync.

I am all for separation of concerns but I think right now we don't have much of a need.

However, since this will take time to refactor it is not worthwhile right now.