Add example launch file with Trace action

launch/example.launch.py

@@ -0,0 +1,21 @@
+# Example launch file for the Trace action
+
+from launch import LaunchDescription
+from launch_ros.actions import Node
+from tracetools_launch.trace import Trace
+
+
+def generate_launch_description():
+    return LaunchDescription([
+        Trace(
+            session_name='my-tracing-session',
+            base_path='/tmp'),
+        Node(
+            package='examples_rclcpp_minimal_publisher',
+            node_executable='publisher_member_function',
+            output='screen'),
+        Node(
+            package='examples_rclcpp_minimal_subscriber',
+            node_executable='subscriber_member_function',
+            output='screen'),
+    ])