Install bat, fd, fzf and hexyl

Summary:
Modern CLI environment can benefit from the David Peter bat and fd projects.
We can also as a bonus provide Hexyl to represent hexadecimal data.

An other project refered by Vim plugins or is fzf, a fast fuzzy finder.

References:

• https://github.com/sharkdp/bat
• https://github.com/sharkdp/fd
• https://github.com/junegunn/fzf
• https://github.com/sharkdp/hexyl

Test Plan: Run bat, fd, fzf and hexyl.

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: https://devcentral.nasqueron.org/D2650