SPIKE - Research and document Keycloak integration

Determine what needs to happen to have the keycloak service integrated into the frontend.

Assumptions:

We should be replacing the tokenService with the new keycloakService, this should involve the following:

- Add keycloak services to package.json
- get the keycloak.json (config) file and add it to coops-ui
- Swap out the tokenService with the new keycloakService in main.ts
- Add any unit-tests to ensure the keycloak-service is working as expected.

Doing so should allow for us to be able to authenticate regardless of the source domain - allowing us to run PR based pipelines, etc.