Add example server command option and integration test (int-201)

[qleisan]

[qleisan]

@rettichschnidi Don't want to reformat an entire code block (command_desc_t commands[]=) as required by "compliance" workflow. Suggestions how to handle this? Some other formatting needed also...

[rettichschnidi]

@rettichschnidi Don't want to reformat an entire code block (command_desc_t commands[]=) as required by "compliance" workflow. Suggestions how to handle this? Some other formatting needed also...

Try clang-format off/on

[mlasch]

Hi @qleisan, sorry for the long delay. It would be nice to have this PR modified and rebased in order to match the latest changes in master. Can you still do the update?