UMG File Manager Kit

This plugin provides a UMG framework for developing various in-game file managers.The C++ code implements all file management logics, including browse, search, sort, multiselect, cut/copy-paste, rename, create new folders/files, delete, refresh, filter browse/search result by file type, and so on. This should have covered majority functions of modern file manager/browser/explorer. If you need something more and it is common, please contact me and I may add it to this pack. To implement your