consolidate build scripts, reorganize source into src/ directory, fix favicon injection

src/shims/crypto/index.js

@@ -0,0 +1,9 @@
+import { randomBytes } from "./random-bytes.js";
+import { createHash } from "./create-hash.js";
+import { scrypt } from "./scrypt.js";
+
+export const cryptoShim = {
+  randomBytes,
+  createHash,
+  scrypt,
+};