update launch file structure

launch/dummy-cell_ceti-table-1-placeworld.launch

+<launch>
+    <!-- MQTT server for communication with client cells -->
+    <arg name="mqtt_server" default="tcp://127.0.0.1:1883" doc="address of the mqtt server for the connection to the controller"/>
+
+    <arg name="connection_address" default="tcp://*:6576"/>
+
+    <param name="/connector_node_ros_ccf/topics/command" value="/ceti_cell_placeworld/command"/>
+
+    <node pkg="ccf_immersive_sorting" type="dummy_sorting_controller" name="ceti_cell_2_placeworld" output="screen">
+        <param name="arm" type="string" value="arm2"/>
+        <param name="other_cell" type="string" value="/ceti_cell_placeworld/scene/update"/>
+        <param name="mqtt_server" type="yaml" value="$(arg mqtt_server)"/>
+        <param name="scene" type="string" value="$(find ccf_immersive_sorting)/config/config_scene_ceti-table-placeworld.json"/>
+    </node>
+
+</launch>

launch/dummy-cell_ceti-table-2-placeworld.launch

+<launch>
+
+    <!-- MQTT server for communication with client cells -->
+    <arg name="mqtt_server" default="tcp://192.168.0.122:1883" doc="address of the mqtt server for the connection to the controller"/>
+
+    <arg name="connection_address" default="tcp://*:6576"/>
+
+    <param name="/connector_node_ros_ccf/topics/command" value="/ceti_cell_placeworld/command"/>
+
+    <node pkg="ccf_immersive_sorting" type="dummy_sorting_controller" name="ceti_cell_2_placeworld" output="screen">
+        <param name="arm" type="string" value="arm2"/>
+        <param name="other_cell" type="string" value="/ceti_cell_placeworld/scene/update"/>
+        <param name="mqtt_server" type="yaml" value="$(arg mqtt_server)"/>
+        <param name="scene" type="string" value="$(find ccf_immersive_sorting)/config/config_scene_ceti-table-placeworld.json"/>
+    </node>
+
+</launch>

launch/noop-sim-cell_ceti-table-1-placeworld.launch

+<launch>
+
+    <!-- MQTT server for communication with client cells -->
+    <arg name="mqtt_server" default="tcp://localhost:1883" doc="address of the mqtt server for the connection to the controller"/>
+
+    <include file="$(find ccf)/launch/noop-sim_setup.launch"/>
+
+    <param name="/connector_node_ros_ccf/topics/command" value="/ceti_cell_placeworld/command"/>
+
+    <node pkg="ccf_immersive_sorting" type="moveit_sorting_controller" name="ceti_cell_placeworld" output="screen">
+        <param name="arm" type="string" value="arm1"/>
+        <param name="other_cell" type="string" value="/ceti_cell_2_placeworld/scene/update"/>
+        <param name="mqtt_server" type="yaml" value="$(arg mqtt_server)"/>
+        <param name="scene" type="string" value="$(find ccf_immersive_sorting)/config/config_scene_ceti-table-placeworld.json"/>
+    </node>
+
+</launch>

launch/noop-sim-cell_ceti-table-2-placeworld.launch

+<launch>
+
+    <!-- MQTT server for communication with client cells -->
+    <arg name="mqtt_server" default="tcp://192.168.0.122:1883" doc="address of the mqtt server for the connection to the controller"/>
+
+    <include file="$(find ccf)/launch/noop-sim_setup.launch"/>
+
+    <param name="/connector_node_ros_ccf/topics/command" value="/ceti_cell_placeworld/command"/>
+    
+    <node pkg="ccf_immersive_sorting" type="moveit_sorting_controller" name="ceti_cell_2_placeworld" output="screen">
+        <param name="arm" type="string" value="arm2"/>
+        <param name="other_cell" type="string" value="/ceti_cell_placeworld/scene/update"/>
+        <param name="mqtt_server" type="yaml" value="$(arg mqtt_server)"/>
+        <param name="scene" type="string" value="$(find ccf_immersive_sorting)/config/config_scene_ceti-table-placeworld.json"/>
+    </node>
+
+</launch>