Add Collabora Office blueprint with Docker Compose and configuration files

- Introduced Docker Compose setup for Collabora Office service, including environment variables for domain, username, and password.
- Added logo for Collabora Office.
- Created template.toml for Collabora Office with default variables for configuration.
- Updated meta.json to include Collabora Office with detailed description, logo, and relevant links.

blueprints/collabora-office/docker-compose.yml

@@ -0,0 +1,12 @@
+version: "3"
+
+services:
+  collabora:
+    image: collabora/code:latest
+    ports:
+      - "9980"
+    environment:
+      - domain=${DOMAIN}
+      - username=${USERNAME}
+      - password=${PASSWORD}
+      - extra_params=--o:ssl.enable=false