Add a RedundantParenthesesCheck

[Gama11]

Some people use cast /return / throw like functions by putting extra parens around them, which is misleading:

return (false);

var a:Array<Int> = cast(b);

throw("Something went wrong");

There might be more expressions than just these three.

[Gama11]

I guess this should probably be generalized to RedundantParenthesesCheck, which also detects cases like these:

var i = (true) = 0 : 1;
if ((object != null) && (object.someProperty == someValue)) {}