Add more specific exceptions

src/Exception/ConnectionFail.php

@@ -0,0 +1,16 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Nsq\Exception;
+
+use RuntimeException;
+use Throwable;
+
+final class ConnectionFail extends RuntimeException implements NsqException
+{
+    public static function fromThrowable(Throwable $throwable): self
+    {
+        return new self($throwable->getMessage(), (int) $throwable->getCode(), $throwable);
+    }
+}