Delegate command posting/creation logging to the framework

[yuri-sergiichuk]

We discussed this matter with @armiol. We'd probably have extension to the System Context which would log commands automatically at the specified level.

For now, I would suggest placing the logging into the place which handles the command, not the one which generates it.

Originally posted by @alexander-yevsyukov in #1

As mentioned, it would be great to have separate command posting/creation logging available as an extension to the framework and we should consider either implementing the extension or moving towards the extension as soon as it is available as part of the framework instead of relying on our custom logs.