add rosdoc2 config to silence warning about no python modules found

Author: ottojo

generate_parameter_library/package.xml

@@ -31,5 +31,6 @@
 
   <export>
     <build_type>ament_cmake</build_type>
+    <rosdoc2>rosdoc2.yaml</rosdoc2>
   </export>
 </package>

generate_parameter_library/rosdoc2.yaml

@@ -0,0 +1,10 @@
+type: "rosdoc2 config"
+version: 1
+
+---
+settings: {
+    ## Prevent rosdoc2 from infering this is a python package because it depends on ament_cmake_python
+    never_run_sphinx_apidoc: true,
+  }
+builders:
+  - sphinx: {}