[EDGEDB] ProjectRules - Queries

[atGit2021]

Monday task
This PR is dependent on the following PR which contains the initial creation of the splitDb2 repo files along with a new project rules module.

This PR ports the remaining custom queries from project rules into their respective repo files, but should NOT be merged into Develop just yet. Please hold until 3210 is merged first.

[atGit2021]

@bryanjnelson @CarsonF , I'll need your help with the edge repo query method, getPreviousSteps. I tried a bunch of things but none seem to give me the correct return signature. I'm not sure how to do the order by functionality for the step history.

[CarsonF]

This extraction may be a good the first step, but this really needs to be rewritten all together to match progress report workflow.
This is the only way EdgeDB will be able to use "previous step".

Also "rules" -> "workflow"

[CarsonF]

Closing in favor of a more robust rewrite we are dev-ing together.