Add ff_connect_notify config option to configure.sh

[arnxxau]

I missed this option after encountering the #444 bug, where the controller's vibration stops working. I also think it would be a good idea to set it to 'disabled' by default while the bug persists, as I find it very annoying. I'm not sure about your thoughts on this. I would fix it myself, but I wouldn't know where to start. Thanks!

[qlty-cloud-legacy[bot]]

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[kakra]

With v0.10 I'm going to change the way the notification plays. I may eventually disable it by default. I'll merge your request on the next patch round. Thanks for the contribution.