Support CLUSTER commands (#2015)

* Support CLUSTER commands

* add some client tests

* remove only

* delete cluster slaves

* delete reset clietn test

* SET SLOT

* test with client

* fix fail

* Update CLUSTER_COUNTKEYSINSLOT.spec.ts

* move commands to client/commands.ts

* clusterNode

* remove CLUSTER-SET-CONFIG-EPOCH test with client

* clean code

Co-authored-by: leibale <leibale1998@gmail.com>

packages/client/lib/commands/CLUSTER_FORGET.spec.ts

@@ -0,0 +1,11 @@
+import { strict as assert } from 'assert';
+import { transformArguments } from './CLUSTER_FORGET';
+
+describe('CLUSTER FORGET', () => {
+    it('transformArguments', () => {
+        assert.deepEqual(
+            transformArguments('0'),
+            ['CLUSTER', 'FORGET', '0']
+        );
+    });
+});