Add option to disable automatic check for new updates available on Startup

[eku]

The App 6.1.0 connects to the Internet when starting (140.82.121.5 = github.com).

Why does the app phone home? Please make it possible to switch this off.

[Moustachauve]

It does so to check if there's any new versions of WLED available that you could install on your devices.

[eku]

It does so to check if there's any new versions of WLED available that you could install on your devices.

Hmm, what if the user has installed the app via an app store?

[Moustachauve]

It's versions of WLED devices (firmware upgrade for the lights), not the app itself. It phones to github.com/wled/wled, not my own repo. There's no data gathering or anything related to that call. It's also limited to once per day.

[eku]

It's versions of WLED devices (firmware upgrade for the lights), not the app itself.

For those who compiler their custom version of WLED firmare, like me, this information is useless.
So please let the user of your app decide whether it wants this or not.