GD: Read LE supported features and states before sending cmds

* Check if BLE privacy is supported before trying to read
  resolving list size
* Check if BLE packet extension is supported before
  reading max data length and suggested default data length
* Check if BLE extended advertising is supported before reading
  maximum advertising data length and number of supported
  advertising sets
* Check if BLE periodic advertising is supported before reading periodic
  advertising list size

Bug: 189123400
Test: DeviceBootTest
Tag: #gd-refactor
Change-Id: I6f1b2d036926205dedbd6b866302378053d422a2