Diktat should either allow documentation of class fields in class KDoc via @property tag or have special error message for this case

[petertrr]

Now it's confusing: there is documentation, but not where diktat expects it, so it says that there is no documentation.

Environment information

• diktat version: 0.4.1

[petertrr]

We should support permissive mode: if property is documented in class KDoc, then we shouldn't emit a warning. If there is no KDoc, we should suyggest to add it in clas body

[nulls]

already supported: we generates KDoc for constructors with generating @param and @property