Add option to allow annotations in SlevomatCodingStandard.Commenting.DisallowCommentAfterCode

[jannes-io]

Example:

PHP Unit's @codeCoverageIgnore must be placed directly behind the line it is referencing.

Does nothing:

            if ($elasticProperty === false) {
                // @codeCoverageIgnore
                continue;
            }

Actually ignores the like

            if ($elasticProperty === false) {
                continue; // @codeCoverageIgnore
            }

So I'm asking for the ability to whitelist annotations behind lines while blocking random "documentation" comments from being behind lines.