add initial readthedocs config

Author: RonnyPfannschmidt

.readthedocs.yaml

@@ -0,0 +1,15 @@
+version: 2
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+
+mkdocs:
+  configuration: mkdocs.yml
+
+# Optionally declare the Python requirements required to build your docs
+python:
+  install:
+  - method: pip
+    path: .
+    extra_requirements: docs