New port: devel/remotery: Single file, realtime CPU/GPU profiler library with remote web viewer

Remotery is a realtime CPU/GPU profiler hosted in a single C file with a
viewer that runs in a web browser.

Features:

• Lightweight instrumentation of multiple threads running on the CPU.
• Web viewer that runs in Chrome, Firefox and Safari. Custom WebSockets server transmits sample data to the browser on a latent thread.
• Profiles itself and shows how it's performing in the viewer.
• Console output for logging text.
• Console input for sending commands to your game.

WWW: https://github.com/Celtoys/Remotery

Reviewed by: mat
Approved by: mat (mentor)
Differential Revision: https://reviews.freebsd.org/D19057