Add a RTD file to copy html sources

Author: Cadair

.gitignore

@@ -1,2 +1,5 @@
 *.py[co]
 *.DS_STORE
+_build/
+credits.rst
+

.readthedocs.yaml

@@ -0,0 +1,17 @@
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+version: 2
+
+build:
+  os: ubuntu-24.04
+  apt_packages:
+    - rsync
+  tools:
+    python: "3.13"
+  jobs:
+    build:
+      html:
+        - echo $READTHEDOCS_OUTPUT
+        - mkdir --parents $READTHEDOCS_OUTPUT/html/
+        - rsync -avz --exclude .git --exclude ".*" --exclude _readthedocs --exclude "*.py" --exclude CNAME ./ _readthedocs/html