Add a setup for readthedocs.

Author: dimitri

.readthedocs.yaml

@@ -0,0 +1,11 @@
+version: 2
+
+# Build from the docs/ directory with Sphinx
+sphinx:
+  configuration: docs/conf.py
+
+# Explicitly set the version of Python and its requirements
+python:
+  version: 3.7
+  install:
+    - requirements: docs/requirements.txt

docs/requirements.txt

@@ -0,0 +1,4 @@
+Sphinx==4.2.0
+sphinx_rtd_theme==1.0.0
+docutils==0.16
+readthedocs-sphinx-search==0.1.0