Properly link flecs library

engine/libs/flecs/examples/cpp/reflection/basics/src/main.cpp

@@ -0,0 +1,24 @@
+#include <basics.h>
+#include <iostream>
+
+struct Position {
+    float x;
+    float y;
+};
+
+int main(int, char *[]) {
+    flecs::world ecs;
+
+    // Register component with reflection data
+    ecs.component<Position>()
+        .member<float>("x")
+        .member<float>("y");
+
+    // Create entity with Position as usual
+    flecs::entity e = ecs.entity()
+        .set<Position>({10, 20});
+
+    // Convert position component to flecs expression string
+    const Position *ptr = e.get<Position>();
+    std::cout << ecs.to_expr(ptr).c_str() << "\n"; // {x: 10, y: 20}
+}