doc: configure ReadTheDocs (#120)

.readthedocs.yaml

@@ -0,0 +1,33 @@
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the OS, Python version and other tools you might need
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3.11"
+    # You can also specify other tool versions:
+    # nodejs: "19"
+    # rust: "1.64"
+    # golang: "1.19"
+
+# Build documentation in the "docs/" directory with Sphinx
+mkdocs:
+  configuration: mkdocs.yml
+  fail_on_warning: false
+
+# Optionally build your docs in additional formats such as PDF and ePub
+# formats:
+#    - pdf
+#    - epub
+
+# Optional but recommended, declare the Python requirements required
+# to build your documentation
+# See https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
+python:
+  install:
+  - requirements: docs/requirements.txt

docs/requirements.txt

@@ -0,0 +1 @@
+mkdocs==1.4.3

pyproject.toml

@@ -9,7 +9,6 @@ requires-python = ">=3.7"
 [project.optional-dependencies]
 dev = [
     "nox",
-    "mkdocs",
 ]
 
 [tool.maturin]