Add modules/scripts for PEV

https://github.com/merces/pev

We should create modules/scripts that use any of these tools that make sense based on what we're currently lacking.

PEV includes these tools:
- pehash - calculate PE file hashes
- pedis - PE disassembler
- pepack - packer detector
- pescan - search for suspicious things in PE files, including TLS callbacks
- pesec - check security features in PE files
- pestr - search for unicode and ascii strings in PE files
- readpe - show PE file headers, sections and more
- rva2ofs - convert RVA to raw file offsets
- ofs2rva - convert raw file offsets to RVA