Bundle official msrcrypto distro in the source (solves some bugs, probably safer)

package.json

@@ -26,7 +26,6 @@
     "mobx": "^6.6.0",
     "mobx-react-lite": "^3.4.0",
     "mobx-state-tree": "^5.1.5",
-    "msrcrypto": "^1.5.8",
     "react": "17.0.2",
     "react-dom": "17.0.2",
     "react-native": "0.68.2",

src/platform/polyfills.native.ts

@@ -2,7 +2,7 @@ import {NativeModules} from 'react-native'
 const {AppSecureRandomModule} = NativeModules
 import {toByteArray} from 'base64-js'
 // @ts-ignore we dont have types for this -prf
-import crypto from 'msrcrypto'
+import crypto from '../third-party/msrcrypto'
 import '@zxing/text-encoding' // TextEncoder / TextDecoder
 
 async function generateSecureRandom(bytes: number) {