Added PSFalcon Layer

[sholland-bamboohealth]

Issue #, if available:

Description of changes: Wanted to add an additional module for those who were wanting to see a non aws module example.

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[austoonz]

I'm not merging this pull request at this time.

I'd like to not include PowerShell Module related layers in this repository moving forwards, so this repository can stay focused on the underlying runtime itself.

Leaving this open as a reference for moving elsewhere if/when we get a new repository opened to host module layer examples.