feat/cli-framework (#12)

Reviewed-on: #12
Co-authored-by: Ron Rise <ron@siteworxpro.com>
Co-committed-by: Ron Rise <ron@siteworxpro.com>

src/Cli/Commands/CommandInterface.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Siteworxpro\App\Cli\Commands;
+
+interface CommandInterface
+{
+    /**
+     * Execute the command.
+     *
+     * @return int
+     */
+    public function execute(): int;
+}