move optional containers into their own compose files (#246)

* move playground into its own compose file

fixes #245

* move ldap-admin and ssp into their own directories

fixes #244

* remove command for konnect from meet example

playground/playground.yml

@@ -0,0 +1,12 @@
+version: "3.5"
+
+services:
+  kopano_playground:
+    image: ${docker_repo:-zokradonh}/kopano_playground
+    restart: unless-stopped
+    depends_on:
+      - kopano_kapi
+      - kopano_konnect
+    networks:
+      - kopano-net
+      - web-net