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/src/components/N8nInput/Input.vue

@@ -33,8 +33,7 @@ export default Vue.extend({
 		ElInput, // eslint-disable-line @typescript-eslint/no-unsafe-assignment
 	},
 	props: {
-		value: {
-		},
+		value: {},
 		type: {
 			type: String,
 			validator: (value: string): boolean =>