Add basic ros2tracee

ros2trace/command/trace.py

@@ -0,0 +1,16 @@
+from ros2cli.command import CommandExtension
+from ros2trace.api import add_trace_arguments
+from ros2trace.api import init
+from ros2trace.api import fini
+
+
+class TraceCommand(CommandExtension):
+    """Trace ROS."""
+
+    def add_arguments(self, parser, cli_name):
+        add_trace_arguments(parser)
+
+    def main(self, *, parser, args):
+        init(args)
+        fini(args)
+        return 0