tns run ios/anroid sync hidden files

[dtopuzov]

tns run ios copy hidden files to simulator/device and restart app.
Some popular IDEs create temporary hidden files while you edit files and this cause unnecessary app restarts.

Steps to reproduce:

tns create TestApp
tns run ios
cp TestApp/app/app.css TestApp/app/.app.css

Result: .app.css is synced and app is restarted.

Valid in both 2.5.3 and @next.

[dtopuzov]

With nativescript@next we copy hidden files for both android and ios and restart the app.