chore: add Sphinx configuration file

Edited to add extensions and customizations.

Author: popescu-v

docs/conf.py

@@ -0,0 +1,101 @@
+# Configuration file for the Sphinx documentation builder.
+#
+# For the full list of built-in configuration values, see the documentation:
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+# -- Project information -----------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
+import os
+import sys
+from pathlib import Path
+
+sys.path.append("..")
+sys.path.append(os.path.join("..", "src"))
+
+project = 'khisto-python'
+copyright = '2026, The Khiops Team'
+author = 'The Khiops Team'
+release = "0.1.0" # TODO: use pyproject metadata here
+
+# -- General configuration ---------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
+# Be strict about any broken references
+nitpicky = True
+
+# To avoid using qualifiers like :class: to reference objects within the same context
+default_role = "obj"
+
+extensions = [
+    "sphinx.ext.autodoc",
+    "sphinx.ext.autosummary",
+    "sphinx.ext.intersphinx",
+    "numpydoc",
+    "sphinx_copybutton",
+]
+
+## Numpydoc extension config
+numpydoc_show_class_members = False
+
+## Autodoc extension config
+autodoc_default_options = {
+    "members": True,
+    "inherited-members": False,
+    "private-members": False,
+    "show-inheritance": True,
+    "special-members": False,
+}
+
+## Intersphinx extension config
+intersphinx_mapping = {
+    "python": ("https://docs.python.org/3", None),
+    "numpy": ("https://numpy.org/doc/stable", None),
+    "matplotlib": ("https://matplotlib.org/stable", None),
+}
+
+templates_path = ['_templates']
+exclude_patterns = ['_templates', '_build', 'Thumbs.db', '.DS_Store']
+
+
+
+# -- Options for HTML output -------------------------------------------------
+# https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output
+
+html_theme = 'furo'
+html_theme_options = {
+    "light_css_variables": {
+        "color-brand-primary": "#FF7900",
+        "color-brand-content": "#F16E00",
+        "color-brand-visited": "#FF7900",
+        "color-sidebar-background": "#FFFFFF",
+        "color-highlighted-background": "#FFD200",
+        "color-admonition-title--note": "#FF7900",
+        "color-admonition-title-background--note": "#FFF0E2",
+        "font-stack": "Helvetica Neue, Helvetica, sans-serif",
+    },
+    "dark_css_variables": {
+        "color-brand-primary": "#FF7900",
+        "color-brand-content": "#F16E00",
+        "color-brand-visited": "#FF7900",
+        "color-sidebar-background": "#000000",
+        "color-highlighted-background": "#FFD200",
+        "color-admonition-title--note": "#FF7900",
+        "color-admonition-title-background--note": "#CC6100",
+        "font-stack": "Helvetica Neue, Helvetica, sans-serif",
+    },
+    # Sets the Github Icon (the SVG is embedded, copied from furo's repo)
+    "footer_icons": [
+        {
+            "name": "GitHub",
+            "url": "https://github.com/khiopsml/khisto-python",
+            "html": """
+                <svg stroke="currentColor" fill="currentColor" stroke-width="0" viewBox="0 0 16 16">
+                    <path fill-rule="evenodd" d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0 0 16 8c0-4.42-3.58-8-8-8z"></path>
+                </svg>
+            """,
+            "class": "",
+        },
+    ],
+}
+html_title = f"<h6><center>{project} {release}</center></h6>"
+html_static_path = ['_static']
+html_css_files = ["css/custom.css"]