Bloom commands (#1786)

* ft.alter

* bloom commands

* tdigest

* delete tdigest

* uncomment tests

* small changes

* Update MADD.ts

* small changes

* clean code

* Update README.md

* Update README.md

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

packages/bloom/lib/commands/cuckoo/ADDNX.spec.ts

@@ -0,0 +1,21 @@
+import { strict as assert } from 'assert';
+import testUtils, { GLOBAL } from '../../test-utils';
+import { transformArguments } from './ADDNX';
+
+describe('CF ADDNX', () => {
+    describe('transformArguments', () => {
+        it('basic add', () => {
+            assert.deepEqual(
+                transformArguments('key', 'item'),
+                ['CF.ADDNX', 'key', 'item']
+            );
+        });
+    });
+
+    testUtils.testWithClient('client.cf.add', async client => {
+        assert.equal(
+            await client.cf.addNX('key', 'item'),
+            true
+        );
+    }, GLOBAL.SERVERS.OPEN);
+});