matrix: Add meta information

Adds the missing meta folder to the matrix role

roles/matrix/meta/main.yml

@@ -0,0 +1,17 @@
+galaxy_info:
+  author: saibotk
+  description: Deploys a matrix server via docker using traefik.
+  license: GPL-3.0-only
+  min_ansible_version: 2.9
+
+  platforms:
+    - name: CentOS
+      versions:
+        - 7
+
+  galaxy_tags: []
+
+dependencies:
+  - docker
+  - docker_compose
+  - traefik