chore: import upstream snapshot with attribution

docs/snippets/all/tutorials/getting_started_log.rs

@@ -0,0 +1,15 @@
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let rec =
+        rerun::RecordingStreamBuilder::new("rerun_example_getting_started")
+            .recording_id("run-1")
+            .save("run-1.rrd")?;
+
+    for t in 0..10 {
+        rec.set_time_sequence("step", t);
+        let tf = t as f64;
+        rec.log("/arm/shoulder", &rerun::Scalars::single((tf * 0.5).sin()))?;
+        rec.log("/arm/elbow", &rerun::Scalars::single((tf * 0.5).cos()))?;
+    }
+
+    Ok(())
+}