chore: Add loading message

src/lib/util/util.ts

@@ -3,6 +3,7 @@ import { analytics, initAnalytics } from './stats';
 import { loadDataFromUrl } from './fileLoaders/loader';
 import { initLoading } from './loading';
 import { applyMigrations } from './migrations';
+import { init } from './mermaid';
 
 export const loadStateFromURL = (): void => {
 	loadState(window.location.hash.slice(1));
@@ -16,6 +17,7 @@ export const syncDiagram = (): void => {
 
 export const initHandler = async (): Promise<void> => {
 	applyMigrations();
+	await initLoading('Loading Mermaid...', init());
 	loadStateFromURL();
 	await initLoading('Loading Gist...', loadDataFromUrl().catch(console.error));
 	syncDiagram();