btaa: HCI classic event process

Introduce BTAA HCI event processing. This change only handles simple
(event that contains only one device information and do not require
additional processing )classic events. Command status and command
complete events will be associated with previous parsed HCI command.

The lookup table is a skelton implementation that does not contain 100%
correct information.

Tag: #feature
Bug: 177230507
Test: verified locally BTAA can partially process HCI events.
BYPASS_LONG_LINES_REASON: consist with gd format

Change-Id: Idd26318200cfd1f94596dd69083452dba5dff478