Port px4vision airframe to gz environment (#21409)

* Port of the PX4 Vision gazebo-classic model to Gazebo. With Gazebo Garden, everything seems functionnal.

* Port of the PX4 Vision gazebo-classic model to Gazebo.

With Gazebo Garden, everything seems functionnal.

* Added airframe for command make px4_sitl gz_px4vision

* revert author field

* Import model from Ignition Fuel instead of defining it directly in the .sdf

Tools/simulation/gz/models/px4vision/model.config

@@ -0,0 +1,15 @@
+<?xml version="1.0"?>
+<model>
+  <name>PX4 Vision</name>
+  <version>1.0</version>
+  <sdf version='1.9'>model.sdf</sdf>
+
+  <author>
+   <name>Jaeyoung Lim</name>
+   <email>jaeyoung@auterion.com</email>
+  </author>
+
+  <description>
+    This is a model of the Holybro PX4 Vision
+  </description>
+</model>

Tools/simulation/gz/models/px4vision/model.sdf

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<sdf version='1.9'>
+  <model name='px4vision'>
+  <include>
+    <uri>
+      https://fuel.gazebosim.org/1.0/PX4/models/PX4 Vision
+    </uri>
+  </include>
+  </model>
+</sdf>