email send example with attachment

[ldicarlo]

Hello!
Thank you for this crate!

Would you mind telling me which way I should use to create an email with an attachment existing in the server?
I did not find other ways to create emails than using client.email_import() so I am trying to do it this way.

If you just tell me the functions I am expected to use, I submit a PR with a working example, once I can get it to work.

Thank you

[ldicarlo]

So this is a working example:

        let mut r = client.build();
        let set_request: &mut Email<jmap_client::Set> = r.set_email().create();
        set_request
            .mailbox_ids([&mailbox_id])
            .from(vec!["luca@test.com"])
            .to([String::from("to@test.com")])
            .subject("Fiches de paie")
            .keywords(["$draft"])
            .html_body(
                EmailBodyPart::new()
                    .content_type("text/html")
                    .part_id("a1")
                    .content_language(["fr"]),
            )
            .body_value(
                String::from("a1"),
                String::from("<p>Hello</p>"),
            );

        attachments.into_iter().for_each(
            |AttachmentPart {
                 file_name,
                 blob_id,
                 content_type,
             }| {
                set_request.attachment(
                    EmailBodyPart::new()
                        .blob_id(blob_id)
                        .name(file_name)
                        .content_type(content_type),
                );
            },
        );
        let res = r.send_set_email().await.unwrap();