Started YazeTests for testing the program

tests/yaze_test.cc

@@ -0,0 +1,16 @@
+#define SDL_MAIN_HANDLED
+#include <gtest/gtest.h>
+
+namespace YazeTests {
+
+TEST(YazeApplicationTests, TemplateTest) {
+  int i = 0;
+  ASSERT_EQ(i, 0);
+}
+
+}  // namespace YazeTests
+
+int main(int argc, char* argv[]) {
+  ::testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}