Extended Sorted Set support by adding BZPOPMIN command (#862)

* Refactored zinterstore, zunionstore commands and command traits

* Merge conflicts resolve, update cluster strategy test with new arguments

* Updated assertion in case if command executed faster then duration minimal threshold

* Updated Keys trait to handle cases when no numkeys modifier needed

* Added support for BZPOPMIN command

* Added command link and description

Co-authored-by: Vladyslav Vildanov <vladyslavvildanov@Vladyslav-Vildanov-MacBook-Pro.local>

src/ClientContextInterface.php

@@ -40,6 +40,7 @@ use Predis\Command\CommandInterface;
  * @method $this bitop($operation, $destkey, $key)
  * @method $this bitfield($key, $subcommand, ...$subcommandArg)
  * @method $this bitpos($key, $bit, $start = null, $end = null)
+ * @method $this bzpopmin(array $keys, int $timeout)
  * @method $this bzmpop(int $timeout, array $keys, string $modifier = 'min', int $count = 1)
  * @method $this decr($key)
  * @method $this decrby($key, $decrement)