Add way to check if an access point is enabled

[abeltrano]

Type

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

Side Effects

• Breaking change
• Non-functional change

Goals

• Allow populating the WifiEnumerateAccessPointsResultItem::IsEnabled field.

Technical Details

• Add GetIsEnabled() function to IAccessPointController interface.
• Implement GetIsEnabled() in existing test class and in AccessPointControllerHostapd.
• Switch use of WpaController to higher-level Hostapd instance in AccessPointControllerHostapd.
• Rename AccessPointCapabilities2 to Ieee80211AccessPointCapabilities.
• Move AccessPointControllerException and HostapdException implementation to own source files.

Test Results

• All unit tests pass.

Reviewer Focus

• None

Future Work

• Existing tests need to be expanded to include the GetIsEnabled API.

Checklist

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