add some missing commands

lib/commands/SETBIT.spec.ts

@@ -0,0 +1,26 @@
+import { strict as assert } from 'assert';
+import { TestRedisServers, itWithClient, TestRedisClusters, itWithCluster } from '../test-utils';
+import { transformArguments } from './SETBIT';
+
+describe('SETBIT', () => {
+    it('transformArguments', () => {
+        assert.deepEqual(
+            transformArguments('key', 0, 1),
+            ['SETBIT', 'key', '0', '1']
+        );
+    });
+
+    itWithClient(TestRedisServers.OPEN, 'client.setBit', async client => {
+        assert.equal(
+            await client.setBit('key', 0, 1),
+            0
+        );
+    });
+
+    itWithCluster(TestRedisClusters.OPEN, 'cluster.setBit', async cluster => {
+        assert.equal(
+            await cluster.setBit('key', 0, 1),
+            0
+        );
+    });
+});