Update Email Template

[zamuzakki]

The current email looks like this:

• Make the Black header the CPLUS green instead.
• Add the logo to the top left inside the green header.
• Add "The output will be deleted from the server after 2 weeks" before "Best regards".

Here's the SVG logo

[zamuzakki]

So far I've only changed the color of the header.

I haven't been able to add logo using these ways:

• Encode the image to base64 and add it inline in HTML
• Attach the image and use cid in the image src.

I wonder if this is an issue in Resend. I will ask for their support, since I haven't found info related to adding image to HTML in their docs.

I also moved "The outputs will be deleted from the server after 2 weeks." to the top since some content in the button are truncated (see the 3 dots at the bottom of the image)

[zamuzakki]

@amyburness @danangmassandy I've tested on staging