Add helpers for managing access points for unit tests

[abeltrano]

Type

• Bug fix
• Feature addition
• Feature update
• Documentation
• Build Infrastructure

Side Effects

• Breaking change
• Non-functional change

Goals

• Allow tests to create fake/simulated access points to validate functionality that requires the existence of access points.

Technical Details

• Add AccessPointManagerTest class which inherits from AccessPointManager but exposes the AddAccessPoint and RemoveAccessPoint functions, allowing tests to add/remove access points at will.
• Extend AccessPointTest to contain public members tracking configurable properties, including capabilities and enablement status.
• Update AccessPointControllerTest to take a AccessPointTest and use this instance to implement the IAccessPointController interface, reflecting all of the property values from it.
• Add documentation to test classes.

Test Results

• All unit tests pass.

Reviewer Focus

• Consider whether any additional functionality is needed to use these updated classes now for API validation.

Future Work

• The test implementations will need to be updated as APIs are implemented and extended.

Checklist

• Build target all compiles cleanly.
• clang-format and clang-tidy deltas produced no new output.
• Newly added functions include doxygen-style comment block.