V5 bringing RESP3, Sentinel and TypeMapping to node-redis

RESP3 Support
   - Some commands responses in RESP3 aren't stable yet and therefore return an "untyped" ReplyUnion.
 
Sentinel

TypeMapping

Correctly types Multi commands

Note: some API changes to be further documented in v4-to-v5.md

packages/client/lib/sentinel/wait-queue.ts

@@ -0,0 +1,24 @@
+import { SinglyLinkedList } from '../client/linked-list';
+
+export class WaitQueue<T> {
+  #list = new SinglyLinkedList<T>();
+  #queue = new SinglyLinkedList<(item: T) => unknown>();
+
+  push(value: T) {
+    const resolve = this.#queue.shift();
+    if (resolve !== undefined) {
+      resolve(value);
+      return;
+    }
+
+    this.#list.push(value);
+  }
+
+  shift() {
+    return this.#list.shift();
+  }
+
+  wait() {
+    return new Promise<T>(resolve => this.#queue.push(resolve));
+  }
+}