Consider an alternative for Microsoft Terminology service

[mathjazz]

As of yesterday, Microsoft Terminology API seems to be shut down: https://slator.com/microsoft-kills-off-beloved-language-portal/

Microsoft terminology is still provided in .tbx format: https://learn.microsoft.com/en-us/globalization/reference/microsoft-language-resources https://download.microsoft.com/download/b/2/d/b2db7a7c-8d33-47f3-b2c1-ee5e6445cf45/MicrosoftTermCollection.zip

We should investigate means to keep using this resource in Pontoon. API calls are disabled in #2900.