added phpunit and composer stuff

dev_mvc/model/forum/Email.php

@@ -0,0 +1,28 @@
+<?php
+namespace model\forum;
+class Email{
+    private $email;
+    private $valid;
+    function __construct($email){
+        $sanitized_email = filter_var($email, FILTER_SANITIZE_EMAIL);
+        
+        if(filter_var($sanitized_email, FILTER_VALIDATE_EMAIL)){
+            $this->email = $sanitized_email;
+            $this->valid = true;
+        }
+        else{
+            $this->email = 'invalid';
+            $this->valid = false;
+        }
+    }
+    public function getEmail(){
+        return $this->email;
+    }
+    public function getValid(){
+        return $this->valid;
+    }
+    public function __toString(): string
+    {
+        return $this->email;
+    }
+}