Refactor: libpe_status: separate digest-related code into own file
There are no changes in the code.
Before:
4035 lib/pengine/unpack.c 2966 lib/pengine/utils.c 7001 total
After:
509 lib/pengine/pe_digest.c 4008 lib/pengine/unpack.c 2502 lib/pengine/utils.c 7019 total