Updates to VMS Utils to support HAL Client Publisher

1. Added new API/utility functions to support publishing VMS messages from HAL client.
2. Fixed creation of offering message by adding publisher ID
3. Fixed an existing failing test from VmsHalManager_test.cpp

Bug: 129475485
Bug: 129163926
Fixes: 129475485
Fixes: 129163926
Test: Added tests for all the new and updated functions in VmsUtilsTest.
Ran the tests on Hawk.
Change-Id: Ie561dafb86d137a4fdf3042e033f8cb133b4aca7