GATT: Add more logs in GATT to help with debugging

* Add more debug level logging to help with GATT debugging
* adb shell device_config put bluetooth INIT_logging_debug_enabled_for_all true
* to enable these logs

Bug: 232258524
Test: gd/cert/run --sl4a
Tag: #bug-fix
Change-Id: I233fe305e1123bd549b89ef9d98dafe98ca05a9b