Use System.Security.Cryptography.Algorithms NuGet pkg for hash algo

[sayedihashimi]

Currently there is a call to [System.Security.Cryptography.HashAlgorithm]::Create() at https://github.com/ligershark/psbuild/blob/dev/src/psbuild.psm1#L1013. This doesn't work in PowerShell core.

We can move to the NuGet package https://www.nuget.org/packages/System.Security.Cryptography.Algorithms/.

Related to #80 #81