Create initial sub-project structure

Added project strucre; some tests & first producer

changed folder structure

Made test build optional

Changed project structure for producer

added doxygen

added doxygen to cmake

fixed doxygen file

made googletest separated

changed cmake strucure

Added head lock guard

producer/inotify-event-detector-cpp/unittests/test_inotify_client.cpp

+#include <gtest/gtest.h>
+
+TEST(EMPTY, REMOVEME)
+{
+    EXPECT_EQ(1, 1);
+}

receiver/README.md

+# cpp-receiver
+
+This is the receiver implementation in c++
+
+## Building this project
+
+### Requirements
+
+ - TODO
+
+### How to build
+
+ - TODO
+