Mozilla Thunderbird add-ons (ATN)

[rugk]

📋 Description

A badge for users, rating etc. of a Thunderbird add-on/extension.

🔗 Data

The API is likely similar to how the AMO things are implemented:
https://github.com/badges/shields/tree/master/services/amo

🎤 Motivation
In the same way as for Firefox add-ons, I should be able to use it to promote my add-on/extension.

Similar to #4690 and the existing Mozilla Add-ons badges.

[chris48s]

Example thunderbird addon api call:
https://addons.thunderbird.net/api/v3/addons/addon/unicodify-text-transformer/
As you say, from first glance it looks like basically a special-case of AMO so probably Mozilla Addons and Thunderbird Addons could share all the same code just with a different base URL (not yet tested).

If so, maybe it would make sense to implement this as an optional registry param for mozilla addons. i.e: instead of making it a whole new service the URL for weekly downloads could be /amo/dw/<addonId>?registry=https%3A//addons.thunderbird.net/api/v3. Mabe this is a bit of YAGNI but then if there is another mozilla product using the same backend, it can just work..