PDJB-792: Add feature flag for compliance actions page

[samyou-softwire]

Ticket number

PDJB-792

Goal of change

adds feature flag and skeleton new view for the compliance actions page

Description of main change(s)

• adds the feature flag that will toggle if we use the new redesign
• adds a release as this is the first feature flag in the release
• adds a copy of the compliance actions page that we can update independent of the old compliance actions page
• adds a test to verify we get the correct page back

Anything you'd like to highlight to the reviewer?

making this a sep PR so we can get this release registered in the code early so other people can use this

may also split the compliance actions page redesign into smaller tickets that can be worked on in parallel

the actual redesign is TODO. both templates should be identical

Checklist

Delete any that are not applicable, and add explanation below for any that are applicable but haven't been done

• Screenshots of any UI changes have been added (no UI change)
• Controller tests for any new endpoints, including testing the relevant permissions
• Test suite has been run in full locally and is passing
• Branch has been rebased onto main and run locally, with everything working as expected (both for your new feature
  and any related functionality)
• TODO comments referencing this JIRA ticket have been searched for and removed - if a future PR will address them,
  mention that here (there is one, but this'll be addressed when we progress with any redesign)
• QA instructions have been added to the ticket (particularly if this is the last PR required to complete the ticket) (no QA thus far)

[TomHanmer29]

The thing about the if is the only real comment, the rest is all very minor :) Looks good!

[samyou-softwire]

I've also renamed the 'old' and 'new' templates to make the new one specific to this redesign

[TomHanmer29]

LGTM!