chore: import upstream snapshot with attribution

examples/cpp/minimal/main.cpp

@@ -0,0 +1,18 @@
+#include <rerun.hpp>
+#include <rerun/demo_utils.hpp>
+
+using rerun::demo::grid3d;
+
+int main() {
+    // Create a new `RecordingStream` which sends data over gRPC to the viewer process.
+    const auto rec = rerun::RecordingStream("rerun_example_cpp");
+    // Try to spawn a new viewer instance.
+    rec.spawn().exit_on_failure();
+
+    // Create some data using the `grid` utility function.
+    std::vector<rerun::Position3D> points = grid3d<rerun::Position3D, float>(-10.f, 10.f, 10);
+    std::vector<rerun::Color> colors = grid3d<rerun::Color, uint8_t>(0, 255, 10);
+
+    // Log the "my_points" entity with our data, using the `Points3D` archetype.
+    rec.log("my_points", rerun::Points3D(points).with_colors(colors).with_radii({0.5f}));
+}