Add Recursive Directory List Capabilities

[coreybutler]

Given a root directory, generate a list of all subdirectories and/or files. This should have:

• Optional Recursion
• Optional Whitelist/Blacklist (ability to ignore glob patterns)
• List files and/or directories.

A key use case for this feature is identifying the tree structure of a directory that needs to be monitored for change events (specifically on Windows).