Implement ForeachStatement for (static) Arrays

I am currently stuck at the semantic analysis.
because depending on the type of the expression that is itterated foreach does diffrent things
how I check If the itterated type has thoose methods ?
-  `popFront()`/`front()`
-  `opApply`

Ho you updated the diff to assert on foreach_reverse, I missed that. It is surely worthwhile to handle both, no ? These are the same code, roughly.