Bluetooth: SDP: Implement ServiceSearchAttribute request PDU

Initial implementation one of basic UUID resolving request PDU based on
Service Search Attribute PDU specification [Core 4.2 Vol 3 Part B 4.7.1]
The request applies approach to query using single only UUID pattern
and getting all attributes for given UUID. The initial PDU transaction
is requested on PSM SDP L2CAP channel connected state.

> ACL Data RX: Handle 77 flags 0x02 dlen 18
      L2CAP: Configure Response (0x05) ident 12 len 10
        Source CID: 64
        Flags: 0x0000
        Result: Success (0x0000)
        Option: Maximum Transmission Unit (0x01) [mandatory]
          MTU: 64
> HCI Event: Number of Completed Packets (0x13) plen 5
        Num handles: 1
        Handle: 77
        Count: 1
< HCI Command: Host Number of Completed Packets (0x03|0x0035) plen 5
        Num handles: 1
        Handle: 77
        Count: 1
< ACL Data TX: Handle 77 flags 0x00 dlen 24
      Channel: 64 len 20 [PSM 1 mode 0] {chan 0}
      SDP: Service Search Attribute Request (0x06) tid 3 len 15
        Search pattern: [len 5]
          Sequence (6) with 3 bytes [8 extra bits] len 5
            UUID (3) with 2 bytes [0 extra bits] len 3
              OBEX Object Push (0x1105)
        Max record count: 65535
        Attribute list: [len 7]
          Sequence (6) with 5 bytes [8 extra bits] len 7
            Unsigned Integer (1) with 4 bytes [0 extra bits] len 5
              0x0000ffff
        Continuation state: 0
> HCI Event: Number of Completed Packets (0x13) plen 5
        Num handles: 1
        Handle: 77
        Count: 1
> ACL Data RX: Handle 77 flags 0x02 dlen 68
      Channel: 64 len 64 [PSM 1 mode 0] {chan 0}
      SDP: Service Search Attribute Response (0x07) tid 3 len 59
        Attribute bytes: 48
        Continuation state: 8
        8d 55 59 58 30 00 00 00                          .UYX0...

Jira: ZEP-1112

Change-Id: I0ed1d989a5abe030f1c70d4d1f104d488eafb2b3
Signed-off-by: Arkadiusz Lichwa <arkadiusz.lichwa@tieto.com>