Add actions component and use it on the coaching sessions page

[jhodapp]

Description

This PR adds a new component that manages listing, adding, editing and deleting actions and uses it in the coaching sessions page.

NOTE To try out this PR, you also need Jim-Hodapp-Coaching/refactor-platform-rs#67 (if it hasn't been approved and merged yet).

GitHub Issue: None

Changes

• Add a new component that lists/adds/edits/deletes Actions

Screenshots / Videos Showing UI Changes (if applicable)

Testing Strategy

1. Log in and navigate to a coaching session
2. Expand the overarching goal bar to reveal the actions tab, click on it
3. Add a new action
4. Navigate away from this coaching session and return to it
5. Notice that the action added is listed
6. Notice that you can also add an action by clicking the "Save" button or by pressing on the keyboard
7. Click on the "..." menu of the action and click "Edit"
8. Change the action body, due by date, and status
9. Navigate away from this coaching session and return to it
10. Notice that the updated action is listed
11. Notice that you can also update an action by clicking the "Save" button or by pressing on the keyboard
12. From the "..." menu, click "Delete" and notice that the action is gone from the list
13. Navigate away from this coaching session and return to it
14. Notice that the actions is not listed
15. Add several new actions
16. Try sorting the actions by clicking on each column heading

Concerns

None