Merge "floss: Add GetProfileConnectionState adapter API"

system/gd/rust/linux/client/src/command_handler.rs

system/gd/rust/linux/client/src/dbus_iface.rs

system/gd/rust/linux/service/src/iface_bluetooth.rs

system/gd/rust/linux/stack/src/bluetooth.rs

system/gd/rust/linux/stack/src/bluetooth_media.rs

system/gd/rust/linux/stack/src/uuid.rs

system/gd/rust/topshim/src/profiles/a2dp.rs

system/gd/rust/topshim/src/profiles/hfp.rs