Add the pairing string for CSIP supported device

Show the pairing dialog with the hint message
that pairing this device will pair all of the
set member of a coordinated set. If the device
supports CSIP, the message will be shown.

Screenshot: https://screenshot.googleplex.com/8WcrdgBoLRgJjHs

Bug: 178981521
Test: make RunSettingsRoboTests ROBOTEST_FILTER=BlueotohPairingDialog
Change-Id: I5432b7264652dd4485e2669f6004caa4f7459238
Merged-In: I5432b7264652dd4485e2669f6004caa4f7459238