add readthedocs config

.readthedocs.yaml

@@ -0,0 +1,15 @@
+version: 2
+
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.10"
+
+mkdocs:
+  configuration: mkdocs.yml
+  fail_on_warning: false
+
+# Optionally declare the Python requirements required to build your docs
+python:
+  install:
+  - requirements: requirements-docs.txt