Missing equivalent to -M flags like for gcc/clang/swift

[KaruroChori]

This requires #1925 to be handled first.

Many downstream build systems, like ninja/samurai expects the compiler to be able to generate a dependency map for each file.
Its conventional format is as in a makefile entry in the form targets: prerequisites.

For reference, flags -Mx discussed in https://gcc.gnu.org/onlinedocs/gcc/Preprocessor-Options.html

For example, a basic C hello world example like

#include <stdio.h>
int main() {
  printf("hello world");
  return 0;
}

gcc test.c -M would result in the following map:

test.o: test.c /usr/include/stdc-predef.h /usr/include/stdio.h \
 /usr/include/x86_64-linux-gnu/bits/libc-header-start.h \
 /usr/include/features.h /usr/include/features-time64.h \
 /usr/include/x86_64-linux-gnu/bits/wordsize.h \
 /usr/include/x86_64-linux-gnu/bits/timesize.h \
 /usr/include/x86_64-linux-gnu/sys/cdefs.h \
 /usr/include/x86_64-linux-gnu/bits/long-double.h \
 /usr/include/x86_64-linux-gnu/gnu/stubs.h \
 /usr/include/x86_64-linux-gnu/gnu/stubs-64.h \
 /usr/local/gcc-14.2.0/lib/gcc/x86_64-linux-gnu/14.2.0/include/stddef.h \
 /usr/local/gcc-14.2.0/lib/gcc/x86_64-linux-gnu/14.2.0/include/stdarg.h \
 /usr/include/x86_64-linux-gnu/bits/types.h \
 /usr/include/x86_64-linux-gnu/bits/typesizes.h \
 /usr/include/x86_64-linux-gnu/bits/time64.h \
 /usr/include/x86_64-linux-gnu/bits/types/__fpos_t.h \
 /usr/include/x86_64-linux-gnu/bits/types/__mbstate_t.h \
 /usr/include/x86_64-linux-gnu/bits/types/__fpos64_t.h \
 /usr/include/x86_64-linux-gnu/bits/types/__FILE.h \
 /usr/include/x86_64-linux-gnu/bits/types/FILE.h \
 /usr/include/x86_64-linux-gnu/bits/types/struct_FILE.h \
 /usr/include/x86_64-linux-gnu/bits/types/cookie_io_functions_t.h \
 /usr/include/x86_64-linux-gnu/bits/stdio_lim.h \
 /usr/include/x86_64-linux-gnu/bits/floatn.h \
 /usr/include/x86_64-linux-gnu/bits/floatn-common.h

Not each of those flags needs implementation, and most are very similar, just combinatorial variants.
Like, if system headers are to be listed or not.