Add access to transport SHM provider

[yellowhatter]

No description provided.

[github-actions]

PR missing one of the required labels: {'breaking-change', 'bug', 'api-sync', 'new feature', 'internal', 'documentation', 'enhancement', 'ci', 'dependencies'}

[github-actions]

PR missing one of the required labels: {'breaking-change', 'dependencies', 'documentation', 'ci', 'enhancement', 'internal', 'bug', 'new feature', 'api-sync'}

[github-actions]

PR missing one of the required labels: {'enhancement', 'dependencies', 'bug', 'new feature', 'ci', 'internal', 'api-sync', 'breaking-change', 'documentation'}

[github-actions]

PR missing one of the required labels: {'dependencies', 'enhancement', 'api-sync', 'ci', 'breaking-change', 'documentation', 'new feature', 'internal', 'bug'}

[milyin]

I think that the z_get_shm_provider should return z_result_t, like other owned object constructors. The enum can be in output variable. Everything else is ok for me

[yellowhatter]

I think that the z_get_shm_provider should return z_result_t, like other owned object constructors. The enum can be in output variable. Everything else is ok for me

fixed