Add a changelog for the rclrs package (#258)

Author: nnmm

rclrs/CHANGELOG.rst

@@ -0,0 +1,15 @@
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Changelog for package rclrs
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+0.3
+----------------
+* Loaned messages (zero-copy) (`#212 <https://github.com/ros2-rust/ros2_rust/pull/212>`_)
+
+0.2 (2022-07-21)
+----------------
+* First release
+* Build based on `colcon-ros-cargo`
+* Message generation packages `rosidl_generator_rs` and `rosidl_runtime_rs`
+* Publisher, Subscription, Client and Service
+* Tunable QoS settings