docs: Update and rename .readthedocs.yml to .readthedocs.yaml

Author: werne2j

.readthedocs.yaml

@@ -0,0 +1,15 @@
+version: 2
+formats: all
+
+# Set the version of Python and other tools you might need
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.12"
+    
+mkdocs:
+  fail_on_warning: false
+  
+python:
+  install:
+    - requirements: docs/requirements.txt