ci: Ensure that eslint runs on all frontend code (no-changelog) (#4602)

* ensure that eslint runs on all frontend code

* remove tslint from `design-system`

* enable prettier and eslint-prettier for `design-system`

* Delete tslint.json

* use a single editorconfig for the repo

* enable prettier for all code in `design-system`

* more linting fixes on design-system

* ignore coverage for git and prettier

* lintfix on editor-ui

packages/design-system/vite.config.ts

@@ -5,9 +5,7 @@ import { defineConfig as defineVitestConfig } from 'vitest/config';
 
 export default mergeConfig(
 	defineConfig({
-		plugins: [
-			vue(),
-		],
+		plugins: [vue()],
 		resolve: {
 			alias: {
 				'@': resolve(__dirname, 'src'),