Refactor Permissions & Add Options

[p0rtL6]

The changes here do the following:

• Finish implementing the commented out system for finding permissions on files and directories
• Replace and standardize all instances of permission checking to use the above code.
• Add permission checking for directories (in result and logs).
• (-g, --foldersonly) Add option to only scan folders (functions similar to only scan shares but still tree walks just does not check files)
• (-w, --logeverything) Added option to log everything, currently this just makes the tree walker log every directory it scans even if it was not marked by a classifier for snaffling (this could be updated in the future to also log other stuff).

The changes here were specifically made so that if you combine the two new options you are able to simply scan shares and directories to list permissions without actually scanning any files, this might be useful in some situations.