doc: activate autodoc extension + extension to adapt Libervia docstring style to autodoc

doc/_ext/docstring.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+
+"""Adapt Libervia docstring style to autodoc"""
+
+
+def process_docstring(app, what, name, obj, options, lines):
+    lines[:] = [
+        l.replace("@param", ":param").replace("@raise", ":raises")
+        for l in lines
+    ]
+
+
+def setup(app):
+    app.connect("autodoc-process-docstring", process_docstring)
+    return {
+        'version': '0.1',
+        'parallel_read_safe': True,
+        'parallel_write_safe': True,
+    }