[1.7.0] Add tenants:run (#81)

* wip

* Apply fixes from StyleCI

* first implementation

* Apply fixes from StyleCI

* Add support for arguments and options

* Apply fixes from StyleCI

* Write docs, add support for = in arg/opt value

* Apply fixes from StyleCI

* add $ [ci skip]

tests/Etc/ConsoleKernel.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace Stancl\Tenancy\Tests\Etc;
+
+use Orchestra\Testbench\Console\Kernel;
+
+class ConsoleKernel extends Kernel
+{
+    /**
+     * The Artisan commands provided by your application.
+     *
+     * @var array
+     */
+    protected $commands = [
+        ExampleCommand::class,
+    ];
+}