feat(autoware_api/rosbridge): add rosbridge max message size parameter (

#522)

* add param

* change parameter value

* delete from root launcher

* delete space

autoware_api_launch/launch/autoware_api.launch.xml

@@ -2,6 +2,7 @@
 
   <arg name="respawn" default="true" />
   <arg name="launch_default_ad_api" default="true"/>
+  <arg name="max_message_size" default="1000000000" />
 
   <!-- AD API -->
   <group if="$(var launch_default_ad_api)">
@@ -31,6 +32,7 @@
   <!-- TODO: respawn will work once https://github.com/ros2/launch/pull/569 is released. I'll delete this comment when it's done. -->
   <include file="$(find-pkg-share rosbridge_server)/launch/rosbridge_websocket_launch.xml">
       <arg name="respawn" value="$(var respawn)"/>
+      <arg name="max_message_size" value="$(var max_message_size)"/>
   </include>
 
 </launch>