build: формат svg

svg.h

@@ -0,0 +1,16 @@
+#pragma once
+
+void
+svg_text(double left, double baseline, std::string text);
+
+void
+svg_begin(double width, double height);
+
+void
+svg_end();
+
+void
+show_histogram_svg(const std::vector<size_t>& bins);
+
+
+