CLI: finish implementing file tree preview

[SmileyAG]

Describe Your Suggestion

Reproduce: vpkeditcli --file-tree pak0.pak

At the moment the filelist is not sorted in alphabetical order, which is not good. You can also add the uncompressed filesize before or after the filename, separated by comma.

[craftablescience]

What I really want is a tree view like this:

Displaying entry metadata after the name would be a nice touch as well

[craftablescience]

Looks pretty and runs very quickly