Add multiline math syntax

Co-authored-by: syuilo <syuilotan@yahoo.co.jp>

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

@@ -1,5 +1,5 @@
 <template>
-<x-formula :formula="formula"/>
+<x-formula :formula="formula" :block="block" />
 </template>
 
 <script lang="ts">
@@ -14,6 +14,10 @@ export default Vue.extend({
 		formula: {
 			type: String,
 			required: true
+		},
+		block: {
+			type: Boolean,
+			required: true
 		}
 	}
 });