Calculate sizes, alignment and offsets for both wasm32 and wasm64 (#1711)

* implement architecture adaptible data layout

* make add_assign and align_to_arch available

* conversion function from alignment

* new method to quickly add some bytes to it

* implementing Display takes care of many errors in wit-bindgen

* more compatibility tweaks

* simplify code generation

* more nice formatting, minor rename

* shorten code by new()

* fix logic error

* document and introduce compatibility to previous versions

* remove merge artifact

* make code compatible with 1.76.0

* fix the fuzzer (resource returned different MAX value)

* correct addition, simplify align, new test

* add documentation

* remove compatibility type alias

* Add SizeAlign comparison fuzzer

* run rustfmt, use old wit-smith version

* use pointers and bytes as separate entities

* add new testcase (found in fuzzing) and correct ptr to 8 byte alignment logic

* correct empty logic after pointer separation

Author: cpetig