Add detection of CI

[Martinsos]

Right now we send very basic telemetry on install (if telemetry is not disabled).
But what we don't track is if installation is happening in the CI or not, which makes this metric quite uninformative. So we should add that -> try to detect if installation is happening in the CI or not.

We already do this check in Wasp CLI -> we should copy the logic from there, as much as we can: https://github.com/wasp-lang/wasp/blob/main/waspc/cli/src/Wasp/Cli/Command/Telemetry/Project.hs#L80 .

[Martinsos]

Done! In get-wasp-sh repo.