Upgrade the jest test suite to match the clients (#379)

* Upgrade the jest test suite to match the clients

* Update makeStaticByteArray

jslib/common/test.setup.ts

@@ -0,0 +1,17 @@
+import { webcrypto } from "crypto";
+
+import { toEqualBuffer } from "./spec";
+
+Object.defineProperty(window, "crypto", {
+  value: webcrypto,
+});
+
+// Add custom matchers
+
+expect.extend({
+  toEqualBuffer: toEqualBuffer,
+});
+
+export interface CustomMatchers<R = unknown> {
+  toEqualBuffer(expected: Uint8Array | ArrayBuffer): R;
+}