Add netremote-server JSON schema and example file.

[abeltrano]

Type

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

Side Effects

• Breaking change
• Non-functional change

Goals

• Provide understanding of netremote-server JSON configuration file format.

Technical Details

• Add JSON schema file netremote-server JSON configuration file.
• Add example netremote-server JSON configuration file.
• Add commit adding comment to AccessPointManager.cxx that was missed in Allow specifying JSON configuration to netremote-server on command-line #329.

Test Results

• Confirmed schema file is valid JSON schema.
• Confirmed example netremote-server JSON configuration file is valid per newly added schema file.

Reviewer Focus

• None

Future Work

• Determine whether "Properties" attribute can be removed while supporting other adjacent properties that are not string <-> string mappings.

Checklist

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