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/N8nRadioButtons/RadioButtons.stories.js

@@ -25,8 +25,7 @@ const Template = (args, { argTypes }) => ({
 	components: {
 		N8nRadioButtons,
 	},
-	template:
-		`<n8n-radio-buttons v-model="val" v-bind="$props" @input="onInput">
+	template: `<n8n-radio-buttons v-model="val" v-bind="$props" @input="onInput">
 		</n8n-radio-buttons>`,
 	methods,
 	data() {