[PM-7382] Add support for non-UUID credential (#11993)

* feat: add tests for guidToRawFormat

* feat: add support for parsing b64 credential ids

* refactor: change interface to use Uint8Array for simplification

Technically this deviates from the specification, but nobody is going to be using the authenticator directly but us so it shouldn't matter. We're gonna switch to `passkey-rs` anyways so

* feat: change how the authenticator parses credential ids to support b64

libs/common/src/platform/services/fido2/guid-utils.spec.ts

@@ -0,0 +1,28 @@
+import { guidToRawFormat } from "./guid-utils";
+
+describe("guid-utils", () => {
+  describe("guidToRawFormat", () => {
+    it.each([
+      [
+        "00000000-0000-0000-0000-000000000000",
+        [
+          0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+          0x00,
+        ],
+        "08d70b74-e9f5-4522-a425-e5dcd40107e7",
+        [
+          0x08, 0xd7, 0x0b, 0x74, 0xe9, 0xf5, 0x45, 0x22, 0xa4, 0x25, 0xe5, 0xdc, 0xd4, 0x01, 0x07,
+          0xe7,
+        ],
+      ],
+    ])("returns UUID in binary format when given a valid UUID string", (input, expected) => {
+      const result = guidToRawFormat(input);
+
+      expect(result).toEqual(new Uint8Array(expected));
+    });
+
+    it("throws an error when given an invalid UUID string", () => {
+      expect(() => guidToRawFormat("invalid")).toThrow(TypeError);
+    });
+  });
+});