Added element call for Matrix server; Added picoshare

docker/synapse/element-call/config.json

@@ -0,0 +1,7 @@
+{
+  "default_server_config": {
+    "m.homeserver": { "base_url": "https://matrix.foxgirls.date", "server_name": "foxgirls.date" }
+  },
+  "livekit": { "livekit_service_url": "https://lk-jwt.foxgirls.date" },
+  "features": { "feature_group_calls": true, "feature_spa": true }
+}