Add CI: Setup E2E using Playwright

[aambrose1]

Draft

1. Testing the pull request trigger.
2. Verify e2e actions workflow reruns when changes are pushed to the branch.

Afterwards, will set to review when e2e tests are pushed!

[aambrose1]

Sharing ghost relations conflict:
A payload of :
{ "person1_id": "ghost_1777561331840_546", "person2_id": 150, "relationshipType": "parent", "side": null, "relationshipStatus": "active", "userId": 87 }

Gives the response { "error": "Error adding relationship", "details": "invalid input syntax for type integer: \"ghost_1777561331840_546\"" }

Relationship person1_id (int) and person2_id (int) are tied to id (int) in the treemember table. So this raises with relationshipService.js connecting siblings with a ghost parent because of the type differences & ghosts not making it to the treemember table. Will debug!