Generating a new email should detect if the word "Email" is included

[jwoertink]

carbon/src/carbon/tasks/gen/email.cr

Lines 59 to 67 in d7d9b30

	"#{filename}_email.cr"
	end
	private def email_class_template_path
	"src/emails/#{email_class_template_filename}"
	end
	private def email_class_template_file(file)
	"src/emails/templates/#{filename}_email/#{file}.ecr"

It assumes you're generating an email like WelcomeUser which it will name WelcomeUserEmail. But if you generate WelcomeUserEmail, it'll name it WelcomeUserEmailEmail... we should not do that 😂