feat: add module mp_units

test/unit_test/static/quantity_test.cpp

@@ -21,12 +21,17 @@
 // SOFTWARE.
 
 #include "test_tools.h"
+#include <limits>
+#include <utility>
+#ifdef MP_UNITS_MODULES
+#include <chrono>
+import mp_units;
+#else
 #include <mp-units/chrono.h>
 #include <mp-units/systems/isq/mechanics.h>
 #include <mp-units/systems/isq/space_and_time.h>
 #include <mp-units/systems/si/si.h>
-#include <limits>
-#include <utility>
+#endif
 
 template<>
 inline constexpr bool mp_units::is_vector<int> = true;