Hello, World!

Yeah this is quite a thicc first commit but there's no way I'm
untangling this mess just for a nice set of starting commits :^)

test/CMakeLists.txt

@@ -0,0 +1,23 @@
+if(NOT RAYCHEL_LOGGER_EXTERNAL)
+    find_package(RaychelLogger REQUIRED)
+endif()
+
+if(NOT RAYCHEL_CORE_EXTERNAL)
+    find_package(RaychelCore REQUIRED)
+endif()
+
+if(NOT RAYCHEL_MATH_EXTERNAL)
+    find_package(RaychelMath REQUIRED)
+endif()
+
+file(GLOB RAYCHEL_TEST_SOURCES "*.test.cpp")
+
+add_executable(Raychel_test
+    ${RAYCHEL_TEST_SOURCES}
+)
+
+target_compile_features(Raychel_test PUBLIC cxx_std_20)
+
+target_link_libraries(Raychel_test PUBLIC
+    Raychel
+)