Add AuthorInterface.php

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

src/Interface/Git/Commit/AuthorInterface.php

@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Ghostwriter\Arm\Interface\Git\Commit;
+
+use Ghostwriter\Arm\Interface\Git\Commit\Author\EmailInterface;
+use Ghostwriter\Arm\Interface\Git\Commit\Author\NameInterface;
+
+interface AuthorInterface
+{
+    public function email(): EmailInterface;
+
+    public function name(): NameInterface;
+
+    public static function new(string $name, string $email): self;
+}