Dynamic HF version change based on remote hf version

For remote devices supporting HF specification 1.6 or lower,
advertize phone's HF version as 1.6. For remote devices supporting
HF version 1.7, add them to data base and advertize phone's HF
version as 1.7. User need to re-pair with HFP version 1.7 devices.

Bug: 252902891
Tag: #feature
Sponsor: wescande
Test: atest net_test_stack_sdp // Test are added in follow-up
Change-Id: I97f706747c3cfc20f5e51717339094bf68abf58a