add in-world lines renderer

src/graphics/render/LinesRenderer.hpp

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <glm/vec3.hpp>
+#include <glm/vec4.hpp>
+#include <vector>
+
+class LineBatch;
+
+class LinesRenderer {
+public:
+    struct Line {
+        glm::vec3 a;
+        glm::vec3 b;
+        glm::vec4 color;
+    };
+
+    void draw(LineBatch& batch);
+
+    void pushLine(const glm::vec3& a, const glm::vec3& b, const glm::vec4& color);
+private:
+    std::vector<Line> queue;
+};