Started to convert from catch2 to fuc2.

tests/base.cpp

@@ -1,9 +1,18 @@
-#include <catch2/catch_test_macros.hpp>
 #include <fmt/core.h>
 #include <string>
+#include <fuc2/testing.hpp>
 
-using namespace fmt;
+using namespace fuc2;
 
-TEST_CASE("base test", "[base]") {
-  REQUIRE(1 == 1);
+namespace base_tests {
+  void test_base_test() {
+    CHECK(1 == 1);
+  }
+
+  fuc2::Set TESTS{
+    .name="base template",
+      .tests={
+        TEST(test_base_test),
+      }
+  };
 }