feat: add telemetry information

[gnikit]

Is there an existing request for this?

• [X] I have searched the existing issues

Feature Request

It would be good to start collecting anonymised telemetry data to gain a bit more insight to our user base. I am not sure what kind of data vscode's telemetry API allows you to collect but I think the following would be good to know

• Country (relevant to extension localisation and issue support)
• OS (relevant for feature development)
• Linter used (relevant for driving compiler development)
• Other tools used (fpm, fortls) (relevant for gauging human user base since conda and pypi downloads include ci and bot stats)