feat: begin building worker

src/decrypt-worker/client.ts

@@ -0,0 +1 @@
+export const workerClient = new Worker(new URL('./worker', import.meta.url), { type: 'module' });

src/decrypt-worker/worker.ts

@@ -0,0 +1,3 @@
+onmessage = (e) => {
+  console.log(e.data);
+};