fix: add browser flag and ignore node modules for building

.presetterrc.json

@@ -3,6 +3,7 @@
     "@lumeweb/presetter-kernel-module-preset"
   ],
     "config": {
-        "official": true
+        "official": true,
+        "browser": true
     }
 }

package.json

@@ -18,5 +18,10 @@
     "dependencies": {
         "@lumeweb/libkernel": "^0.1.0-develop.12",
         "@lumeweb/libpeerdiscovery": "^0.1.0-develop.1"
+    },
+    "browser": {
+        "node-fetch": false,
+        "stream": false,
+        "formdata-polyfill": false
     }
 }