Move connect/disconnect group from LE audio Service to Setting

As we do the connect/disconnect inside LE audio Service, it would handle
the LE audio profile only. We should handle it by all profile
connections for the group devices. Move it from profile layer to Setting

Bug: 206049683
Test: connect/disconnect via setting and observe the profile state change
Change-Id: I24228e5d5a45d8163dc9938a6bde09653c8f9258