feat: add marker for control's stop reason, false by default (autowarefoundation#912)

Signed-off-by: Takayuki Murooka <takayuki5168@gmail.com>

Author: takayuki5168

autoware_launch/rviz/autoware.rviz

@@ -2433,6 +2433,19 @@ Visualization Manager:
             Constant Color: false
             Scale: 0.30000001192092896
             Value: false
+        - Class: rviz_default_plugins/Marker
+          Enabled: false
+          Name: Stop Reason
+          Namespaces:
+            {}
+          Topic:
+            Depth: 5
+            Durability Policy: Volatile
+            Filter size: 10
+            History Policy: Keep Last
+            Reliability Policy: Reliable
+            Value: /control/trajectory_follower/longitudinal/stop_reason
+          Value: false
         - Class: rviz_default_plugins/MarkerArray
           Enabled: false
           Name: Debug/MPC