Started to convert from catch2 to fuc2.

tests/camera.cpp

@@ -1,6 +1,17 @@
-#include <catch2/catch_test_macros.hpp>
 #include <fmt/core.h>
+#include <fuc2/testing.hpp>
 
-TEST_CASE("view based camera system", "[camera]") {
-  REQUIRE(1 == 1);
+using namespace fuc2;
+
+namespace camera_tests {
+  void test_view_based_camera_system() {
+    CHECK(1 == 1);
+  }
+
+  fuc2::Set TESTS{
+    .name="camera tests (EMPTY!)",
+      .tests={
+        TEST(test_view_based_camera_system),
+      }
+  };
 }