update: 编队消息增加加速度字段

msg_definitions/VKFly.xml

@@ -1025,6 +1025,9 @@
       <extensions />
       <field type="float" name="formation_heading" units="deg">if nan, use yaw as formation heading</field>
       <field type="float" name="form_head_lock">0 unlock, 1 lock</field>
+      <field type="float" name="ae" units="m/s/s">formation leader east acceleration</field>
+      <field type="float" name="an" units="m/s/s">formation leader east acceleration</field>
+      <field type="float" name="au" units="m/s/s">formation leader east acceleration</field>
     </message>
 
     <message id="53005" name="VK_ENGINE_ECU_STAUS">