Actor model imlementation

Add actor library which implements the Actor model (see  https://en.wikipedia.org/wiki/Actor_model).

common/utils/actor/README.md

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+# Overview
+
+This is a simple actor implementation (see https://en.wikipedia.org/wiki/Actor_model).
+
+Actor is implemented as a single thread with single producer/consumer queue as input. You can think of it as a single thread threadpool
+
+If you need concurrency, consider allocating more than one actor.
+
+# Thread safety
+
+There is two ways to ensure thread safety between two actors
+ - Use core affinity to set both actor to run on the same core.
+ - Use data separation, like in testcase thread_safety_with_actor_specific_data