Add Read The Docs config file (#236)

Signed-off-by: Eric Brown <eric.brown@securesauce.dev>

.readthedocs.yaml

@@ -0,0 +1,16 @@
+version: 2
+
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.12"
+
+sphinx:
+  configuration: doc/source/conf.py
+
+python:
+  install:
+    - requirements: requirements.txt
+    - requirements: doc/requirements.txt
+    - method: pip
+      path: .