Language usage during updates

[timtmok]

During the update check, add the languages in use during the last UTC day. The runtime session service already tracks when a session was last used for the purpose of setting the active console session. This can be used to see if a session was used within a 24 hour period.

The language usage can be added to the update check with query parameters like so:

https://cdn.posit.co/positron/prereleases/mac/universal/releases.json?python=1

[jonvanausdeln]

Verified Fixed

Positron Version(s) : 2025.03.0-92
OS Version(s) : Windows 11, Ubuntu 24

Test scenario(s)

Language was reported for R, Python, and Notebooks sessions.

Automated tests tracked in #6332