Clone of fd with some custom changes for my needs.

1. Support for whitelist search

why I added this:

• In fd I found it bit hard to make it search only in specific directories. One way is in .ignore add all directories you don't want to search by !<ignore-dir>. But, this was too cumbersome. Hence, I built support for whitelist. How it works:

1. create a file called .whitelists in your direction and add only the directories that you want it to be search it.
2. Run fd with fd -w where it searches only within those whitelisted directories.