[doc] Add .readthedocs.yaml

Preparing for this change:
https://blog.readthedocs.com/migrate-configuration-v2/

Signed-off-by: David Cantrell <[email protected]>

Author: dcantrell

.readthedocs.yaml

@@ -0,0 +1,28 @@
+---
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the version of Python and other tools you might need
+build:
+    os: ubuntu-22.04
+    tools:
+        python: "3.11"
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+    builder: html
+    configuration: docs/conf.py
+
+formats:
+    - pdf
+    - epub
+
+# We recommend specifying your dependencies to enable reproducible builds:
+# https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
+python:
+    install:
+        - requirements: docs/rtd-requirements.txt