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/RESP/verbatim-string.ts

@@ -0,0 +1,8 @@
+export class VerbatimString extends String {
+  constructor(
+    public format: string,
+    value: string
+  ) {
+    super(value);
+  }
+}