Implement macho tests

tests/comparators/test_elf.py

tests/comparators/test_macho.py

tests/data/macho_expected_diff_arch

tests/data/macho_llvm_expected_diff__cstring

tests/data/macho_llvm_expected_diff__eh_frame

tests/data/macho_llvm_expected_diff__la_symbol_ptr

tests/data/macho_llvm_expected_diff__stub_helper

tests/data/macho_llvm_expected_diff__stubs

tests/data/macho_llvm_expected_diff__text

tests/data/macho_llvm_expected_diff__unwind_info

tests/data/macho_llvm_expected_diff_dyn_relocations

tests/data/macho_llvm_expected_diff_dyn_symbols

tests/data/macho_llvm_expected_diff_file_headers

tests/data/macho_llvm_expected_diff_needed_libs

tests/data/macho_llvm_expected_diff_relocations

tests/data/macho_llvm_expected_diff_strings

tests/data/macho_llvm_expected_diff_symbols

tests/data/macho_otool_expected_diff__cstring

tests/data/macho_otool_expected_diff__data

tests/data/macho_otool_expected_diff__text