chore: Add RTD configuration which is apparently required now

Author: twpol

.readthedocs.yaml

@@ -0,0 +1,17 @@
+# Read the Docs configuration file for Sphinx projects
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+version: 2
+
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.12"
+
+sphinx:
+  configuration: Source/Documentation/Manual/conf.py
+
+formats:
+  - htmlzip
+  - pdf
+  - epub