[Client] Load katex async to reduce bundle size

src/client/app/common/views/components/formula.vue

@@ -4,7 +4,6 @@
 
 <script lang="ts">
 import Vue from 'vue';
-import * as katex from 'katex';
 
 export default Vue.extend({
 	props: {
@@ -13,10 +12,14 @@ export default Vue.extend({
 			required: true
 		}
 	},
-	computed: {
-		compiledFormula(): any {
-			return katex.renderToString(this.formula);
-		}
+	data() {
+		return {
+			compiledFormula: null
+		};
+	},
+	async created() {
+		const katex = await import('katex').then(m => m.default);
+		this.compiledFormula = katex.renderToString(this.formula);
 	}
 });
 </script>