Support PowerShell Core\6

[jkdba]

This needs researching and and testing to see if this is even feasible.

[jkdba]

Did some initial research here, keepasslib makes references to windows forms mainly among others that will slow this down. Will have to look and consider .net core ported keepasslib options if any viable.

[JakeMoe]

FYI, not just OSX/Linux. Tried this Windows PSCore (6.2.1) using a keyfile, and got:

New-Object : Exception calling ".ctor" with "1" argument(s): "Could not load type 'System.Security.Cryptography.ProtectedMemory' from assembly 'System.Security, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'."
At C:\Users\JohnM\Documents\PowerShell\Modules\PoShKeePass\2.1.3.0\PoShKeePass.psm1:2636 char:39

and

Exception calling "Open" with "3" argument(s): "Could not load file or assembly 'System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. The system cannot find the file specified."
At C:\Users\JohnM\Documents\PowerShell\Modules\PoShKeePass\2.1.3.0\PoShKeePass.psm1:2664 char:9

[jkdba]

@JakeMoe that is correct, the keepass lib uses winforms amoung other .Net Standard only features, Updated Title to reflect this.