+ hide some progressbars
+ rewrite telemetry into a class
+ remove obsolete start info logs
+ update contributing.md to include contributing.md
+ send posthog event in a bg thread
+ related side effects
+ move build variables into a python file
+ rewrite logic to check if there's an internet connection
+ move IS_BUILD into settings
+ update pyintaller to 6.0.0
+ update other packages to latest