Add hookstate.js.org entry

Hookstate is a modern and fast state management for React. The website serves code samples and parts of the documentation so far. The project is at https://github.com/avkonst/hookstate at this moment.

cnames_active.js

@@ -769,6 +769,7 @@ var cnames_active = {
   "hoa": "thehoa.github.io",
   "hoast": "hoast.github.io",
   "hois": "hoisW.github.io",
+  "hookstate": "hookstate.netlify.com", // noCF
   "hooloo": "hooloo.github.io", // noCF? (don´t add this in a new PR)
   "how-to-mithril": "stephanhoyer.github.io/how-to-mithril",
   "hpy": "happyae.github.io/www",