Add new actions for running E2E tests

Add actions for running e2e tests (#35)

* Add actions for running e2e tests

* Move the whole e2e workflow to shared

* Move docker-compose file to uid2-e2e repo

* Add `uid2_e2e_phone_support` as inputs

* Cat out config files

* Use docker pull/push command directly instead of addnab/docker-run-action@v3

* Move script to a separate folder and rename it

* Replace the default latest version with the provided version

* Pass in operator type when doing docker compose

* Remove `secrets.GHCR_PAT`

* Add branch name as an input

* Add step for checkingout UID2-operator

* Set default image version for core and optout to be latest

* Remove branch tags