Add an API endpoint for generating resources

Is your feature request related to a specific problem?

Similar to #530 we need an endpoint that can kick off a scan and return the results.

Describe the solution you’d like

A single endpoint that can scan various resources given a set of credentials and being told what type to scan

Describe alternatives you’ve considered, if any

A totally different endpoint per scan type

Additional context

The initial work should only include running the scan and returning the results synchronously.

Update 2022-05-11 @SteveDMurphy - Some smaller issues in support of this have been split off, the intent of this issue is still the same however to have an endpoint that kicks off a scan and returns the output from the generate commands

[iamkelllly]

Ah if it’s already basically dev complete, it should be fine to include with 1.7 @SteveDMurphy ; we were just trying to cut scope for the release since it looks like other items may not land in time. adding the milestone tag back

[SteveDMurphy]

A comment from the PR description around the naming as well and how we got here:

In 9e805d0 all mention of the word scan was removed. There is some existing confusion around the generate and scan commands that could benefit from combining those commands (similar to what was discussed with audit/evaluate) but for consistency purposes today this will use generate exclusively.