[doc] Update paparazzicenter doc and add airframe doc. (#3398)

* Update paparazzicenter doc and add airframe doc.
* remove empty files.

---------

Co-authored-by: Fabien-B <fabien.bonneval@gmail.com>
Co-authored-by: Florian Sansou <florian.sansou@enac.fr>

doc/sphinx/source/conf.py

@@ -40,17 +40,22 @@ extensions = [
     'sphinx.ext.todo',
     'sphinx.ext.viewcode',
     'sphinx.ext.githubpages',
+    'myst_parser',
     'modules_parser',
 ]
 
+myst_enable_extensions = [
+  "colon_fence",
+]
+myst_heading_anchors = 3
+
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
 
 # The suffix(es) of source filenames.
 # You can specify multiple suffix as a list of string:
 #
-# source_suffix = ['.rst', '.md']
-source_suffix = '.rst'
+source_suffix = ['.rst']
 
 # The encoding of source files.
 #