* feat: auto-accept-invite module and docs

* fix: name typos and some forgot to adjust variables

* fix: accept only direct messages should work now and better wording

* changed: only_direct_messages variable naming

* feat: add logger, add synapse workers config

* Fix typo and add details about synapse-auto-acccept-invite

* Add newline at end of file

* Fix alignment

* Fix logger name for synapse_auto_accept_invite

The name of the logger needs to match the name of the Python module.

Ref: d673c67678/synapse_auto_accept_invite/__init__.py (L20)

* Add missing document start YAML annotation

* Remove trailing spaces

---------

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

`spam_checker` has been deprecated for quite a while.
While it still probably works and while newer versions of
mjolnir-antispam still use it, we should switch to the new API.

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2330

- forego removing Docker images - it's not effective anyway, because it
  only removes the last version.. which is a drop in the bucket, usually

- do not reload systemd - it's none of our business. `--tags=start`,
  etc., handle this

- combine all uninstall tasks under a single block, which only runs if
  we detect traces (a leftover systemd .service file) of the component.
  If no such .service is detected, we skip them all. This may lead to
  incorect cleanup in rare cases, but is good enough for the most part.

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2228

This paves the way for installing other roles into `roles/galaxy` using `ansible-galaxy`,
similar to how it's done in:

- https://github.com/spantaleev/gitea-docker-ansible-deploy
- https://github.com/spantaleev/nextcloud-docker-ansible-deploy

In the near future, we'll be removing a lot of the shared role code from here
and using upstream roles for it. Some of the core `matrix-*` roles have
already been extracted out into other reusable roles:

- https://github.com/devture/com.devture.ansible.role.postgres
- https://github.com/devture/com.devture.ansible.role.systemd_docker_base
- https://github.com/devture/com.devture.ansible.role.timesync
- https://github.com/devture/com.devture.ansible.role.vars_preserver
- https://github.com/devture/com.devture.ansible.role.playbook_runtime_messages
- https://github.com/devture/com.devture.ansible.role.playbook_help

We just need to migrate to those.