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

examples/command-with-modifiers.js

@@ -1,32 +0,0 @@
-// Define a custom script that shows example of SET command
-// with several modifiers.
-
-import { createClient } from 'redis';
-
-async function commandWithModifiers() {
-  const client = createClient();
-
-  await client.connect();
-  await client.del('mykey');
-
-  let result = await client.set('mykey', 'myvalue', {
-      EX: 60,
-      GET: true
-    }
-  ); 
-  
-  console.log(result); //nil
-
-  result = await client.set('mykey', 'newvalue', {
-      EX: 60,
-      GET: true
-    }
-  );                        
-  
-  console.log(result); //myvalue
-
-  await client.quit();
-}
-
-commandWithModifiers();
-