add bs58 as a dependency

override some of its imports as they would just add
a lot of nodejs fluff that needs stubbing out for a browser.

scripts/package-overrides/buffer/index.js

@@ -1,5 +1,5 @@
 module.exports = class Buffer {
-    static isBuffer() {return false;}
+    static isBuffer(array) {return array instanceof Uint8Array;}
     static from(arrayBuffer) {return arrayBuffer;}
     static allocUnsafe(size) {return Buffer.alloc(size);}
     static alloc(size) {return new Uint8Array(size);}