Add basic package for launch integration

tracetools_launch/trace.py

@@ -0,0 +1,29 @@
+
+from typing import List
+from typing import Optional
+from typing import Text
+
+from launch.action import Action
+from launch_context import LaunchContext
+from launch_description_entity import LaunchDescriptionEntity
+
+
+class Trace(Action):
+    """
+    Tracing action for launch.
+
+    Sets up and enables tracing through a launch file description.
+    """
+
+    def __init__(self, *,
+        session_name: str,
+        base_path: str,
+        events_ust: List[str],
+        events_kernel: List[str],
+        **kwargs) -> None:
+        """Constructor."""
+        super().__init__(**kwargs)
+
+    def execute(self, context: LaunchContext) -> Optional[List[Action]]:
+        # TODO
+        pass