update read the docs config

.readthedocs.yml

@@ -0,0 +1,24 @@
+# .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: "3.12"
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+   configuration: docs/conf.py
+
+# Optionally build your docs in additional formats such as PDF
+formats:
+   - htmlzip
+
+# Optionally set the version of Python and requirements required to build your docs
+python:
+   install:
+   - requirements: docs/requirements.txt

docs/requirements.txt

@@ -1,2 +1,3 @@
 breathe<4.13.0
 exhale
+sphinx_rtd_theme