Update mail extension

[ViGeng]

Description

• Add preference for See Recent Mail: unreadonly to show whether only unread messages.

The motivation is that: When I used the See Recent Mail action, I thought it had bugs since I could not see any emails from my inbox. When I checked the extension code, I finally realized this command (action) by default only shows unread emails while there is no convenient alternative command to check inbox. (`see mail accounts needs further steps, command -> choose account -> email list).

• [x] The most simple way is to add a preference which lets users decide what they want to show.
• [ ] There is another way of providing extra command (action) for checking inbox emails, which is to say, Check inboxes.

Screencast

Checklist

• [x] I read the extension guidelines
• [x] I read the documentation about publishing
• [x] I ran npm run build and tested this distribution build in Raycast
• [x] I checked that files in the assets folder are used by the extension itself
• [x] I checked that assets used by the README are placed outside of the metadata folder

[raycastbot]

Thank you for your contribution! :tada:

🔔 @yug2005 @ikupenov @pernielsentikaer @fengtianze @tleo19 @Luk4h @jfkisafk @StevenRCE0 @ridemountainpig you might want to have a look.

You can use this guide to learn how to check out the Pull Request locally in order to test it.

You can expect an initial review within five business days.

[ViGeng]

I also would ask for opinions regarding the action names. See seems wired; Check would be better, I guess? If this works for you, please let me know, and I will fix this together in this PR.

[pernielsentikaer]

What do you think @yug2005

[neo773]

I had the exact same thought when I was trying out this extension so I uninstalled it, so I agree with OP's perspective here.

[pernielsentikaer]

Makes sense for me to use Search, View, or Check😊

[ViGeng]

Okay, let's use view then. :)