split relay and pool into pure and wasm modules.

relay-wasm.ts

@@ -0,0 +1,16 @@
+import { verifyEvent } from './wasm.ts'
+import TrustedRelay from './trusted-relay.ts'
+
+export default class WasmRelay extends TrustedRelay {
+  constructor(url: string) {
+    super(url, { verifyEvent })
+  }
+
+  static async connect(url: string) {
+    const relay = new WasmRelay(url)
+    await relay.connect()
+    return relay
+  }
+}
+
+export * from './trusted-relay.ts'