mjolnir: deploy mjolnir using docker compose

Moving from mjolnir from nix-infra to ansible-infra.
Also using native encryption now instead of the deprecated pantalaimon
and having protectAllJoinedRooms set to true for easier and quicker
usage.

resources/chaosknoten/mjolnir/docker_compose/config.yaml.j2

@@ -0,0 +1,23 @@
+# https://github.com/matrix-org/mjolnir/blob/main/config/default.yaml
+
+homeserverUrl: "https://matrix.hamburg.ccc.de"
+rawHomeserverUrl: "https://matrix.hamburg.ccc.de"
+# Mjolnir should be able to retrieve an access token itself
+encryption:
+  use: true
+  username: "moderation"
+  password: {{ secret__mjolnir_matrix_user_password }}
+dataPath: "/data/storage"
+autojoinOnlyIfManager: true
+recordIgnoredInvites: true
+# The native encryption backend doesn't seem to support v12 rooms yet.
+# https://github.com/matrix-org/mjolnir/issues/641
+managementRoom: "#moderation-management-v11:hamburg.ccc.de"
+forwardMentionsToManagementRoom: false
+verboseLogging: false
+logLevel: "INFO"
+syncOnStartup: true
+verifyPermissionsOnStartup: true
+noop: false
+fasterMembershipChecks: false
+protectAllJoinedRooms: true