First https request is responsible for 18% of windows startup time

[jrieken]

• windows 10, latest insiders
• open a folder, close all editors, don't show viewlets
• start profiling
• reload
• 🐌 there is call to the getmac node module that takes ~1 second. That call is made always when the extension gallery services comes up. That call is also made on first startup when telemetry data is initialised.

We should consider replacing this module with os#networkinterfaces

[jrieken]

Note that this only reproduces on insiders or when configuring dev with an extension gallery. Windows only as it seems.

[jrieken]

related to #15455

[jrieken]

getmac vs networkInterfaces on windows 10, times in nanoseconds. unsure why in VS Code it's a second but the relative difference is huuuuge

[jrieken]

This is actually not getmac but creating a secure context a little after that call. We should probably still get rid of that module, but we should also make fix the request service...

[jrieken]