Incorrect wide string character size

Right now, RetDec expects 4-byte wide chars on Linux (ELF binaries) and 2-byte wide chars on Windows (PE).

If we compile this source:
```c
#include
#include

int main() {
printf("%d\n", sizeof(wchar_t));
wprintf(L"\x1111\xaaaa");
return 0;
}
```
like this (force 2-byte wide char):
```
gcc -m32 -fshort-wchar -o test.elf test.c
```
and decompile the binary, we get an incorrect output - bad string, because 4-byte char size was used. The same will happen if 4-byte wide chars are used in PE binaries.

No idea how to solve this, if it is even possible. But maybe someone will come up with something.

Reproduce the issue with the provided test.c source, gcc -m32 -fshort-wchar, and the generated test.elf, then decompile it and compare the wide-string output. No project source file or test entry point is named; done means wide characters are interpreted correctly for both 2-byte and 4-byte binaries.

Written by the indexing model from the issue text.