Remove the direct use of cuda_for_dali auxiliary namespace.

[mzient]

Category:

Refactoring (Redesign of existing code that doesn't affect functionality)

Description:

Due to conflicts with libcu++, the dependence on a libcu++ fork was removed and the relevant files were copied to DALI and their contents moved to an auxiliary namespace. The direct use of this auxiliary namespace leaks a technical workaround into DALI source base.
This PR imports the relevant symbols into namespace dali::mm and the usages of cuda_for_dali:: are replaced with mm::.
Additionally, some memory kind queries are replaced with a helper trait is_host_accessible, which was already there (it's been removed from mm::detail to mm).

Additional information:

Affected modules and functionalities:

Memory managment headers and some random files affected by the previous workaround.

Key points relevant for the review:

N/A

Tests:

• Existing tests apply
• New tests added
  • Python tests
  • GTests
  • Benchmark
  • Other
• N/A

Checklist

Documentation

• Existing documentation applies
• Documentation updated
  • Docstring
  • Doxygen
  • RST
  • Jupyter
  • Other
• N/A

DALI team only

Requirements

• Implements new requirements
• Affects existing requirements
• N/A

REQ IDs: N/A

JIRA TASK: N/A

[dali-automaton]

CI MESSAGE: [9100392]: BUILD STARTED

[dali-automaton]

CI MESSAGE: [9100846]: BUILD STARTED

[szalpal]

LGTM with one remark I DM'ed

[dali-automaton]

CI MESSAGE: [9100846]: BUILD PASSED