COMP: Refactor Wrapping setup and fix legacy warnings

1) Setup the ITK_WRAPPING internal variable right at the beginning
2) Remove itkWrapSetup.cmake file for code simplification
3) Regroup wrapping option checks in main CMakeLists.txt file
4) Mark Java as advanced, and disable it with a message
5) A new check is added asking the user to set ITK_LEGACY_SILENT to ON.

Change-Id: I732191a0da912ca6a48b2c1d8d9b8892f2adff7a
Merge topic 'RefactorWrappingSetup'

cb65aee9 COMP: Refactor Wrapping setup and fix legacy warnings