Migrate gatt handling code from server to conn
Migrate gatt handling code from server to conn

shirou/gatt,vizidrixfork/gatt,kmtr/gatt,wheelcomplex/gatt,suapapa/gatt,suapapa/gatt,wheelcomplex/gatt,roylee17/gatt,vizidrixfork/gatt,nikhilbharat/gatt,paypal/gatt,shirou/gatt,beaconinside/gatt,beaconinside/gatt,roylee17/gatt,nikhilbharat/gatt,paypal/gatt,nikhilbharat/gatt,kmtr/gatt,devicehive/gatt,devicehive/gatt