rendering formulas (v0.6)

https://github.com/goessner/markdown-it-texmath

Author: VadimBoev

client/html/index.html

@@ -28,6 +28,10 @@
 			sizes="16x16"
 			href="{{ url_for('bp.static', filename='img/favicon-16x16.png') }}" />
 		<link rel="manifest" href="{{ url_for('bp.static', filename='img/site.webmanifest') }}" />
+		<link  rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex/dist/katex.min.css">
+		<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/markdown-it-texmath/texmath.min.js"></script>
+		<script src="https://cdn.jsdelivr.net/npm/katex/dist/katex.min.js"></script>
+		<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/markdown-it-texmath/css/texmath.min.css">
 		<title>FreeGPT</title>
 		</head>