gh-148675: Add Zd/Zf formats to array, ctypes, memoryview, struct (#148676)

* Add Zd/Zf format support to array, memoryview and struct.
* ctypes: Replace F/D/G complex format with Zf/Zd/Zg.
* Modify array, ctypes and struct modules to support format strings
  longer than 1 character (such as "Zd").
* Change array.typecodes type from str to tuple.