create email and emailer with tests

src/Email/Email.php

@@ -0,0 +1,73 @@
+<?php
+
+namespace FreightQuote\Email;
+
+class Email
+{
+    private array $recipients = [];
+    private array $cc = [];
+    private array $bcc = [];
+    private string $subject = '';
+    private string $body = '';
+    private array $fileAttachments = [];
+
+    public function addRecipient(string $email): void
+    {
+        $this->recipients[] = $email;
+    }
+
+    public function getRecipients(): array
+    {
+        return $this->recipients;
+    }
+
+    public function addCC(string $email): void
+    {
+        $this->cc[] = $email;
+    }
+
+    public function getCC(): array
+    {
+        return $this->cc;
+    }
+
+    public function addBCC(string $email): void
+    {
+        $this->bcc[] = $email;
+    }
+
+    public function getBCC(): array
+    {
+        return $this->bcc;
+    }
+
+    public function setSubject(string $subject): void
+    {
+        $this->subject = $subject;
+    }
+
+    public function getSubject(): string
+    {
+        return $this->subject;
+    }
+
+    public function setBody(string $body): void
+    {
+        $this->body = $body;
+    }
+
+    public function getBody(): string
+    {
+        return $this->body;
+    }
+
+    public function addAttachment(string $path): void
+    {
+        $this->fileAttachments[] = $path;
+    }
+
+    public function getAttachments(): array
+    {
+        return $this->fileAttachments;
+    }
+}

src/Email/Emailer.php

@@ -0,0 +1,10 @@
+<?php
+
+namespace FreightQuote\Email;
+
+
+
+interface Emailer
+{
+    public function send(Email $email): bool;
+}