Add Mkdocs API site (#8133)

* Add MkDocs API site

doc/mkdocs/build.sh

@@ -0,0 +1,43 @@
+#!/bin/sh -e
+
+# Patch Pygments and Python-Markdown
+PYGMENTS_FILE=$(pip show pygments | awk '/Location/ { print $2 }')/pygments/formatters/html.py
+MARKDOWN_FILE=$(pip show markdown | awk '/Location/ { print $2 }')/markdown/extensions/codehilite.py
+patch -N -r - $PYGMENTS_FILE code_tag.patch || true
+patch -N -r - $MARKDOWN_FILE lua_highlight.patch || true
+
+# Split lua_api.txt on top level headings
+cat ../lua_api.txt | csplit -sz -f docs/section - '/^=/-1' '{*}'
+
+cat > mkdocs.yml << EOF
+site_name: Minetest API Documentation
+theme:
+    name: readthedocs
+    highlightjs: False
+extra_css:
+    - css/code_styles.css
+    - css/extra.css
+markdown_extensions:
+    - toc:
+        permalink: True
+    - codehilite
+plugins:
+    - search:
+        separator: '[\s\-\.\(]+'
+nav:
+- "Home": index.md
+EOF
+
+mv docs/section00 docs/index.md
+
+for f in docs/section*
+do
+	title=$(head -1 $f)
+	fname=$(echo $title | tr '[:upper:]' '[:lower:]')
+	fname=$(echo $fname | sed 's/ /-/g')
+	fname=$(echo $fname | sed "s/'//g").md
+	mv $f docs/$fname
+	echo "- \"$title\": $fname" >> mkdocs.yml
+done
+
+mkdocs build --site-dir ../../public