split relay and pool into pure and wasm modules.

pool-wasm.ts

@@ -0,0 +1,10 @@
+import { verifyEvent } from './wasm.ts'
+import TrustedSimplePool from './trusted-pool.ts'
+
+export default class WasmSimplePool extends TrustedSimplePool {
+  constructor() {
+    super({ verifyEvent })
+  }
+}
+
+export * from './trusted-pool.ts'