Begin moving to postgres spilo + adding pgvector

[FelixMalfait]

This doesn't work / DO NOT REVIEW - MERGE, raising a PR to ask a question.

How to test:

docker build -t twentycrm/twenty-postgres-spilo:latest -f ./packages/twenty-docker/twenty-postgres-spilo/Dockerfile .
docker images --no-trunc | grep twenty-postgres-spilo
postgres-on-docker:
	docker run \
	--name twenty_pg \
	-e PGUSER_SUPERUSER=twenty \
	-e PGPASSWORD_SUPERUSER=twenty \
	-e PGUSER_ADMIN=admin \
	-e PGPASSWORD_ADMIN=admin \
	-e ALLOW_NOSSL=true \
	-v twenty_db_data:/home/postgres/pgdata \
	-p 5432:5432 \
	REPLACE_WITH_IMAGE_ID

Edit: there's something wrong in the docs, passing:

Gives:

With user postgres:postgres (superuser) and twenty:twenty (not super user) being able to login)