PipeScript.Languages.get/set_Exclude(s) should exclude files from interpretation

[StartAutomating]

In order to facilitate #873 in a more stable, open-ended way, there should be new script properties (and one alias property) on PipeScript.Interpreter psuedotypes.

This should default to excluding protocols and template files.

In order to avoid shooting oneself in the foot, this should be further broken down into two Excludes:

• PipeScript.Languages.ExcludePattern(s) should exclude patterns from interpretation #876
• PipeScript.Languages.ExcludePath(s) should exclude paths from interpretation #877

Setting the global exclude should auto-sort into each potential exclude, based off of type.

Patterns should be excluded before paths.