starting with component unit testing (running on device)

Signed-off-by: Peter Siegmund <developer@mars3142.org>

components/logger/test/logger_test.c

@@ -0,0 +1,7 @@
+#include "unity.h"
+
+#include "logger.h"
+
+TEST_CASE("Add two numbers", "[logger]") {
+  TEST_ASSERT_EQUAL(3, add(1, 2));
+}