Add placeholder rtd configuration

.readthedocs.yml

@@ -0,0 +1,23 @@
+# .readthedocs.yml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+build:
+    os: "ubuntu-22.04"
+    tools:
+        python: "3.10"
+
+# Build documentation in the doc/ directory with Sphinx
+sphinx:
+    configuration: docs/conf.py
+
+# Optionally build your docs in additional formats such as PDF and ePub
+# formats: all
+
+# Optionally set the version of Python and requirements required to build your docs
+python:
+    install:
+        - requirements: doc/rtd-requirements.txt

docs/rtd-requirements.txt

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+jinja2>3.1
+sphinx-rtd-theme>1.2