Implement J3ML Namespace

include/J3ML/Geometry/Triangle2D.h

@@ -1,8 +1,10 @@
-//
-// Created by dawsh on 1/25/24.
-//
+#pragma once
 
-#ifndef J3ML_TRIANGLE2D_H
-#define J3ML_TRIANGLE2D_H
 
-#endif //J3ML_TRIANGLE2D_H
+namespace J3ML::Geometry
+{
+    class Shape2D {};
+    class Triangle2D {
+    public:
+    };
+}