chore: Add env var REACT_APP_CATALOG_SERVER_PORT (#2878)

* chore: Add env var REACT_APP_CATALOG_SERVER_PORT to use a custom catalog server in the inspector

* fix: missing EOL

* refactor: Update REACT_APP_CATALOG_SERVER_PORT to REACT_APP_CATALOG_URL

* feat: Update @dcl/sdk package

Author: cyaiox

.env.example

@@ -15,4 +15,5 @@ REACT_APP_INSPECTOR_PORT=
 
 ; Local development of @dcl/asset-packs
 REACT_APP_BIN_INDEX_JS_DEV_PORT=
-REACT_APP_BIN_INDEX_JS_DEV_PATH=
+REACT_APP_BIN_INDEX_JS_DEV_PATH=
+REACT_APP_CATALOG_URL=