Move the secure-random code into this project due to build issues with the module, which is no longer maintained

package.json

@@ -21,6 +21,7 @@
     "@react-navigation/native-stack": "^6.6.2",
     "@react-navigation/stack": "^6.2.1",
     "@zxing/text-encoding": "^0.9.0",
+    "base64-js": "^1.5.1",
     "mobx": "^6.6.0",
     "mobx-react-lite": "^3.4.0",
     "mobx-state-tree": "^5.1.5",
@@ -31,7 +32,6 @@
     "react-native-inappbrowser-reborn": "^3.6.3",
     "react-native-safe-area-context": "^4.3.1",
     "react-native-screens": "^3.13.1",
-    "react-native-securerandom": "^1.0.0",
     "react-native-web": "^0.17.7",
     "ucans": "0.9.1"
   },