docs: Where can maintainers find support

Add a chapter to "How to Become a Recipe Maintainer",
 so that new maintainers know where to turn for help.

Goal: lower the barrier to becoming a maintainer
 for people not (yet) integrated into the community.

docs/maintainers/maintain.md

@@ -59,3 +59,20 @@ See the [`MAINTENANCE.md`](https://git.coopcloud.tech/coop-cloud/traefik/raw/bra
 ### Pull request template
 
 See the [`.gitea/PULL_REQUEST_TEMPLATE.md`](https://git.coopcloud.tech/coop-cloud/traefik/src/branch/master/.gitea/PULL_REQUEST_TEMPLATE.md) of the Traefik recipe.
+
+
+## Where can maintainers find support?
+
+### Chat
+An active community exists in the [`#coopcloud-tech`](https://matrix.to/#/#coopcloud-tech:autonomic.zone?via=autonomic.zone) channel, which can answer your questions and help with issues. Please be patient when asking for support.
+
+### Recipe Issue Tracker
+If you're stuck on a problem, create an issue in your recipe's issue tracker. Users of your repository may contribute PRs, otherwise you can ask the community for support.
+
+### Toolshed
+If you're blocked by a problem in Coop Cloud's tooling, write a ticket to one of the [Toolshed](https://git.coopcloud.tech/toolshed) issue trackers. For example:
+* [abra](https://git.coopcloud.tech/toolshed/abra/issues)
+* [docs.coopcloud.tech](https://git.coopcloud.tech/toolshed/docs.coopcloud.tech/issues)
+* [recipes.coopcloud.tech](https://git.coopcloud.tech/toolshed/recipes.coopcloud.tech/issues)
+
+If you cannot find a repository to match your problem, you can write in the (organizing issues)[https://git.coopcloud.tech/toolshed/organising/issues] tracker. (See: [migration notice](https://git.coopcloud.tech/toolshed/organising/issues/667))