add camera calibration launch file

launch/object-localization/camera_calibration.launch

+<launch>
+    <arg name="launch_prefix" default=""/> <!-- set to value="gdbserver localhost:10000" for remote debugging -->
+    <arg name="camera_name" default="/usb_cam"/>
+    <arg name="device" default="/dev/video0"/>
+
+    <node name="usb_cam" pkg="usb_cam" type="usb_cam_node" output="log" respawn="true" respawn_delay="3">
+        <param name="video_device" value="$(arg device)"/>
+        <param name="image_width" value="2560"/>
+        <param name="image_height" value="1440"/>
+        <param name="autofocus" value="1"/>
+        <param name="pixel_format" value="mjpeg"/>
+        <param name="framerate" value="30"/>
+        <param name="autofocus" value="true"/>
+    </node>
+
+</launch>