chore: added required files for RTD

added .readthedocs.yaml configuration file
added requirements.txt file.

.readthedocs.yaml

@@ -0,0 +1,23 @@
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: "0.1.2"
+
+# Set the OS, Python version and other tools you might need
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+
+# Build documentation in the "docs/" directory with Sphinx
+sphinx:
+  configuration: docs/conf.py
+
+formats: all
+
+# Optional but recommended, declare the Python requirements required
+python:
+   install:
+   - requirements: docs/requirements.txt

docs/requirements.txt

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+sphinx
+sphinx_rtd_theme
+sphinx-autodoc
+sphinx-napoleon