Add first-party support for Mailtrap

[ash-jc-allen]

Hey @taylorotwell!

I was thinking of making a PR to propose first-party support for Mailtrap. My plan was to use a similar approach to the Resend integration and add a new src/Illuminate/Mail/Transport/MailtrapTransport.php class (along with any other supporting changes needed to create the driver, etc).

That way, we could then use MAIL_MAILER=mailtrap in our .env file.

I've not looked at how complex the code for this integration would be. But, assuming it has similar complexity to the existing Resend integration, is this something you'd consider merging? I just wanted to check before I started working on it 😄

[browner12]

Sorry, but you're rarely (never) going to get feedback in here. You just gotta build it, submit a PR, and cross your fingers.

[ash-jc-allen]

Hey Andy! Yeah, I imagined that might be the case. I thought I'd try my luck here before I made a start, but if I don't hear back, I'll just take the plunge and make the PR haha 😄