Implement WifiAccessPointEnable

[abeltrano]

Type

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

Side Effects

• Breaking change
• Non-functional change

Goals

*Allow access points to be enabled.

Technical Details

• Add impl functions for each API to allow usage in smaller blocks.
• Add helper to extract strongly typed frequency bands from Dot11AccessPointConfiguration.
• Add helpers for obtaining an IAccessPoint and IAccessPointController in a consistent way.
• Fix SetSssid -> SetSsid.

Test Results

• All unit tests pass.

Reviewer Focus

• None

Future Work

• Enforce AKM and cipher suite settings on enable. IAccessPointController needs to be expose functions for configuring security.
• Convert WifiAccessPointDisable to use an impl function of the new pattern.

Checklist

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