Develop a plugin to send emails to WooCommerce

It is required to add an item on the order page in the WooCommerce admin panel to send email notifications to the buyer. The appearance of the block in the screenshot. Requires a tracking number entry field and a dropdown to select a shipping method. After clicking the "send" button, the fact of dispatch is recorded in the notes to the order. If it is possible to also integrate the functionality with the window of the order preview, it will be generally great (tipping).

Make it out as a plugin.