[202405][syncd] Enable bulk api for neighbor entries

[Ndancejic]

SAI 1.11.0 added support for bulk neighbor entries. Adding support for neighbor bulk operations to syncd.

cherry-pick of https://github.com/sonic-net/sonic-sairedis/pull/1373. which includes the commits below:

commit 57b8e6f6a43efdd252fe4cdaaf9d93178c76f620 (HEAD -> ndancejic202405, dancejic/ndancejic202405, 202405) Author: Nikola Dancejic [email protected] Date: Tue May 14 18:23:55 2024 +0000

[syncd] Enable bulk api for neighbor entries

SAI 1.11.0 added support for bulk neighbor entries. Adding support for
neighbor bulk operations to syncd.
* added neighbor entry capability to bulk operations in syncd
* added unit tests for neighbor bulk operations
* added code coverage for neighbor bulk operations

Signed-off-by: Nikola Dancejic <[email protected]>

commit fbe3fc78dd308f570bc76b4838b3eee8c69f9828 Author: Nikola Dancejic [email protected] Date: Fri May 24 17:57:45 2024 +0000

[syncd] Addressing PR comments #1373

Signed-off-by: Nikola Dancejic <[email protected]>

commit a5b2bbb2f2404c9818a7050123a0dfc32299a144 Author: Nikola Dancejic [email protected] Date: Tue May 28 01:16:46 2024 +0000

Adding neighborBulkTest to syncd tests

Signed-off-by: Nikola Dancejic <[email protected]>