Add helpers to parse nl80211 PHY information

[abeltrano]

Type

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

Side Effects

• Breaking change
• Non-functional change

Goals

• Ensure AP capability information can be used in the netremote API implementation.

Technical Details

• Install the hostapd_cli command-line tool.
• Add wiphy index and accessor method to Nl80211Interface.
• Add Nl80211<Wiphy|WiphyBand|WiphyBandFrequency> classes to represent the corresponding nl80211 concepts of a Wi-Fi PHY, band, and frequency respectively, including code to parse nl80211 messages containing this information.

Test Results

• All unit tests pass.

Reviewer Focus

• None

Future Work

• Use these to populate the AP capability information in WifiEnumerateAccessPoints via Microsoft.Net.Wifi.AccessPointCapabilities.

Checklist

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