Add connect directory, update readme

src/connect/target/Multi.ts

@@ -0,0 +1,26 @@
+import type {Target} from '../Executor'
+import type {Message} from '../connect/Socket'
+import {Emitter} from '../util/Emitter'
+
+export class Multi extends Emitter {
+  constructor(readonly targets: Target[]) {
+    super()
+
+    targets.forEach(t => {
+      t.on('*', (verb, ...args) => this.emit(verb, ...args))
+    })
+  }
+
+  get connections() {
+    return this.targets.flatMap(t => t.connections)
+  }
+
+  send(...payload: Message) {
+    this.targets.forEach(t => t.send(...payload))
+  }
+
+  cleanup = () => {
+    this.removeAllListeners()
+    this.targets.forEach(t => t.cleanup())
+  }
+}