add automated fixing to preceding lines spacing rules

[rinusser]

Currently the code spacing rules don't support automatic fixing with phpcbf as the spacing sniffs currently cheat a little by handling multiple contexts equally. For example in the Spacing.Use sniff code it makes no difference whether a previous comment is actually related to the processed "use" statement or another "use" statement that's commented out.

Rethink what spacing rules can and should be fixable, rethink the preceding lines spacing sniff structures and then implement automatic fixing.