feat: add eoEvalPrint

eo/src/eoEvalPrint.h

@@ -0,0 +1,23 @@
+
+template< class EOT>
+class eoEvalPrint: public eoEvalFunc<EOT>
+{
+    protected:
+        std::ostream& _out;
+        eoEvalFunc<EOT>& _eval;
+        std::string _sep;
+
+    public:
+
+        eoEvalPrint(eoEvalFunc<EOT>& eval, std::ostream& out=std::cout, std::string sep="\n") :
+            _out(out),
+            _eval(eval),
+            _sep(sep)
+        {}
+
+        void operator()( EOT& sol )
+        {
+            _eval(sol);
+            _out << sol << _sep;
+        }
+};