[DO NOT MERGE] Support toggling resumption in Settings

Moved setting so we can use Tunable:
adb shell settings put secure qs_media_resumption 1

If setting is changed, removes all existing resume players

Bug: 154039093
Test: manual
Test: atest SettingsProviderTest
Test: atest com.android.systemui.media

Change-Id: Iad056fbad4520cfe762d9e9f5ed62d38ea1117b1