Playbook config copied from mautrix-facebook and altered accordingly.

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1055

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/962

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/683

instead of bullet points which make it more difficult to tell whether or not you completed all of the steps

Prompted by this: https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/779#issuecomment-764807507

Fixes #562 (Github Issue)

Fixes #586 (Github Issue)

Related to #557 (Github Pull Request).

Related to #540 (Github Pull Request).

Related to #551 and #555 (Github Pull Requests).

added docs, added seperate service for database, pr comments

Related to #454 (Github Pull Request).

Related to #339 (Github Pull Request).

Fixes #255 (Github Issue).

Fixes #71 (Github Issue).

It's too many configuration options to keep them in a single list.
Trying to put some order.

add doc