PipeScript should make better bridges between itself and the rest of .NET

This should take the form of a number of built-in templates, as well as functions that leverage them.

• PipeScript.Net.PSPool #664
• PipeScript.Net.Jobs #665
• PipeScript.Net.PSNodeJob #666
• PipeScript.Net.Providers #667
• PipeScript.Net.Hosts #668
• PipeScript.Net.CmdletAdapter #669
• PipeScript.Net.PSTransformAttribute #682
• PipeScript.Net.PSDynamic #780

Additionally, this should be exportable as a unique .ps1xml, so it can easily be dropped into other projects as source.

• Export PipeScript.Net.types.ps1xml #779