tests: benchmark sett encryption/decryption

Benchmark sett encryption/decryption with:

Data size levels:

• 500 MB
• 1 GB
• 5 GB
• 10 GB
• 20 GB
• 100 GB

File size composition levels:

• small files
• large files
• mix of small and large files

Data type levels:

• text (fasta file format)
• binary (some sort of image data)

Sett command levels:

• encrypt
• encrypt-ext-compression (use set with external compression using tar, pigz and 7zip
• encrypt-only (no compression at all)
• decrypt
• transfer

Compression levels:

• gzip compression levels from 1 to 9

cmd tool for benchmarking runtime https://github.com/sharkdp/hyperfine