🎉 init(cmake): init modern cmake template

include/modern/lib.hpp

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <vector>
+#include <tuple>
+
+/// \brief Accumulate a vector to produce the mean and the first moment of the distribution.
+///
+/// This computes the mean and the first moment of a vector of double values.
+///
+std::tuple<double, double> accumulate_vector(
+    const std::vector<double>& values ///< The vector of values
+);