Feat/selenium e2e tests

[dividor]

In this PR I retired the e2e tests patching chainlit as they ended up too complex and relied on too many patches.

The PR instead implements testing with Selenium, exactly replicating user interaction with the user interface running as part of the environment.

It includes:

1. e2e tests github actions, using docker-compose to spin up DBs, chat environment, etc
2. Test data for on-the-fly analysis
3. Set of e2e tests

NOTE: This PR reverts docker-compose-github.yml for simplicity. It builds the main docker-compose.yml in prep for testing the Autogen team.

Future work:

• The build takes a very long time, might consider a nightly build and puch, so tests just pull images
• Promptflow container is built with docker build rather than docker-compose. Might want to add to main docker-compose and use profiles