Allow to set custom timeout for connect

[MattesWhite]

Feature Description

Disclaimer: I can only speak for the Linux version. I don't know how this is handled for iOS or Windows.

At the moment, the timeout for a connect action is hard coded into the library: https://github.com/deviceplug/btleplug/blob/master/src/bluez/adapter/peripheral.rs#L404
It would be nice to have a connect_with_timeout(&self, timeout: Duration) method to be able to adjust the timeout at runtime.

[qdot]

Agreed, and this is still an issue in the new dbus bluez stuff. Will take this into consideration for the new API (cc @qwandor)

[blandger]

As I can see that feature needs enhancing in bluez-async code at least.

I added that PR in bluez-async /first.
bluez-rs/bluez-async#10

Added PR in btleplug
https://github.com/deviceplug/btleplug/pull/213/files

[osynge]

This issue has hit me too, so am pleased to see work is going on here.

[Massimiliano-solutiontech]

Currently the timeout is infinite? Because if that I'm gonna need this feature

[blandger]

Not finished for Windows, macos.

#213