add pubsub server - solid-crud and wac test suites passing

Author: ylebre

composer.json

@@ -17,7 +17,9 @@
         "pdsinterop/solid-auth": "v0.13.0",
         "pdsinterop/solid-crud": "v0.8.1",
         "phpmailer/phpmailer": "^6.10",
-        "sweetrdf/easyrdf": "v1.15"
+        "sweetrdf/easyrdf": "v1.15",
+        "phpseclib/bcmath_compat": "^2.0",
+        "phrity/websocket": "^3.5"
     },
     "require-dev": {
         "phpunit/phpunit": "^12.2",