Add BranchInterface.php

Signed-off-by: Nathanael Esayeas <nathanael.esayeas@protonmail.com>

src/Interface/GitHub/BranchInterface.php

@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ghostwriter\Arm\Interface\GitHub;
+
+use Ghostwriter\Arm\Interface\GitHubCliInterface;
+use Ghostwriter\Arm\Interface\StringableInterface;
+
+interface BranchInterface extends GitHubCliInterface, StringableInterface
+{
+}