Fix change One-handed mode screen size from 50% to 40% but also keep

adb command mechanism for UX tuning

Provide both config.xml and adb command mechanism.

Bug: 169724216

Test:
adb shell setprop persist.debug.one_handed_offset_percentage 60
adb shell pidof com.android.systemui |xargs -i adb shell kill -9 {}
or adb reboot

adb shell setprop
persist.debug.one_handed_translate_animation_duration 150
adb shell pidof com.android.systemui |xargs -i adb shell kill -9 {}
or adb reboot

Test: manual
Test: atest WMShellUnitTests
Change-Id: I9502cbe8e496f484fdeb8041b5618c47aba0f1d1