Boring generic file filter

I'm tired of messy file and folder names, inconsistent file extensions, etc.

Paths

src -> absolute path of your top level folder (recursive file search happens here)
dst -> currently not used, plugin to process, rename files to your desired directory

There are currently 3 filter classes implemented.

The classes can handle multplie arguments. The classes can be connected arbitrarily with the binary operators (&, |, ~)

Not tested on Windows and Mac