KaTeX & Syntax Highlighting support

package.json

@@ -50,8 +50,13 @@
 		"@codemirror/state": "^6.5.2",
 		"@codemirror/view": "^6.38.1",
 		"dompurify": "^3.2.6",
+		"highlight.js": "^11.11.1",
+		"isomorphic-dompurify": "^2.26.0",
 		"jszip": "^3.10.1",
+		"katex": "^0.16.22",
 		"marked": "^16.2.1",
+		"marked-highlight": "^2.2.2",
+		"marked-katex-extension": "^5.1.5",
 		"svelte-codemirror-editor": "^1.4.1",
 		"thememirror": "^2.0.1"
 	}