Add Ganesha - PHP implementation of Circuit Breaker pattern. (#894)

* Add Ganesha - PHP implementation of Circuit Breaker pattern.

* Move: HTTP -> Miscellaneous

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Co-authored-by: Alexander Kartavenko <askemailbox@gmail.com>

README.md

 * [Annotations](https://github.com/doctrine/annotations) - An annotation library (part of Doctrine).
 * [BotMan](https://github.com/botman/botman) - A framework agnostic PHP library to build cross-platform chatbots.
 * [ClassPreloader](https://github.com/ClassPreloader/ClassPreloader) - A library for optimizing autoloading.
+* [Ganesha](https://github.com/ackintosh/ganesha) - A PHP implementation of Circuit Breaker pattern.
 * [Hprose-PHP](https://github.com/hprose/hprose-php) - A cross-language RPC.
 * [noCAPTCHA](https://github.com/ARCANEDEV/noCAPTCHA) - Helper for Google's noCAPTCHA (reCAPTCHA).
 * [Pagerfanta](https://github.com/whiteoctober/Pagerfanta) - A pagination library.