Define strings for output switcher dialog in SystemUI

-SystemUI requires to launch Bluetooth pairing setting
-Volume panel requires to launch SystemUI dialog

Bug: 155822415
Test: build pass
Merged-In: Ibb39b29aa383aab1df3e168b4f91ad1a40bf7682
Change-Id: Ibb39b29aa383aab1df3e168b4f91ad1a40bf7682
(cherry picked from commit 7d0e084058601c56dac558ae065cf3c5ac26b94a)
1 file changed