use dockers for tests, use npm workspaces, add rejson & redisearch modules, fix some bugs

packages/client/lib/command-options.ts

@@ -0,0 +1,14 @@
+const symbol = Symbol('Command Options');
+
+export type CommandOptions<T> = T & {
+    readonly [symbol]: true;
+};
+
+export function commandOptions<T>(options: T): CommandOptions<T> {
+    (options as any)[symbol] = true;
+    return options as CommandOptions<T>;
+}
+
+export function isCommandOptions<T>(options: any): options is CommandOptions<T> {
+    return options && options[symbol] === true;
+}