docs: integrate mkdocs into repository

docs/material/plugins/privacy/parser.py

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+# #
+#   Copyright (c) 2025 Aetherinox
+#
+#   Permission is hereby granted, free of charge, to any person obtaining a copy
+#   of this software and associated documentation files (the "Software"), to
+#   deal in the Software without restriction, including without limitation the
+#   rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+#   sell copies of the Software, and to permit persons to whom the Software is
+#   furnished to do so, subject to the following conditions:
+#
+#   The above copyright notice and this permission notice shall be included in
+#   all copies or substantial portions of the Software.
+#
+#   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+#   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+#   FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+#   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+#   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+#   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+#   IN THE SOFTWARE.
+# #
+
+from html.parser import HTMLParser
+from xml.etree.ElementTree import Element
+
+# -----------------------------------------------------------------------------
+# Classes
+# -----------------------------------------------------------------------------
+
+# Fragment parser - previously, we used lxml for fault-tolerant HTML5 parsing,
+# but it blows up the size of the Docker image by 20 MB. We can't just use the
+# built-in XML parser, as it doesn't handle HTML5 (because, yeah, it's not XML),
+# so we use a streaming parser and construct the element ourselves.
+class FragmentParser(HTMLParser):
+
+    # Initialize parser
+    def __init__(self):
+        super().__init__(convert_charrefs = True)
+        self.result = None
+
+    # Create element
+    def handle_starttag(self, tag, attrs):
+        self.result = Element(tag, dict(attrs))