Ajout CORS policy

modules/services/matrix.nix

@@ -147,6 +147,7 @@
     locations."/_matrix" = {
       proxyPass = "http://localhost:8008";
       extraConfig = ''
+        add_header 'Access-Control-Allow-Origin' '*';
         proxy_set_header X-Forwarded-For $remote_addr;
         proxy_set_header X-Forwarded-Proto $scheme;
         proxy_set_header Host $host;