Feature request: check_files MD5/SHA Hash

[lgmu]

In Windows this can be achieved like this:

Get-FileHash -path C:\Users\lgmu\test.txt -algorithm md5

Then you can simply compare the checksum.
So in SNClient check_files it could look like this:

check_files "path=<PATH>" "critical=md5_checksum != <CHECKSUM>

Would be nice if it also supports
SHA1
SHA256
SHA384
SHA512
(if possible)