feat(eslint-plugin): add rule to disallow single array styles

packages/eslint-plugin/README.md

@@ -59,6 +59,7 @@
 | [`no-outputs-metadata-property`](https://github.com/angular-eslint/angular-eslint/blob/main/packages/eslint-plugin/docs/rules/no-outputs-metadata-property.md) | Disallows usage of the `outputs` metadata property. See more at https://angular.io/styleguide#style-05-12 | :white_check_mark: | | |
 | [`no-pipe-impure`](https://github.com/angular-eslint/angular-eslint/blob/main/packages/eslint-plugin/docs/rules/no-pipe-impure.md) | Disallows the declaration of impure pipes | | | :bulb: |
 | [`no-queries-metadata-property`](https://github.com/angular-eslint/angular-eslint/blob/main/packages/eslint-plugin/docs/rules/no-queries-metadata-property.md) | Disallows usage of the `queries` metadata property. See more at https://angular.io/styleguide#style-05-12. | | | |
+| [`no-single-styles-array`](https://github.com/angular-eslint/angular-eslint/blob/main/packages/eslint-plugin/docs/rules/no-single-styles-array.md) | Disallows usage `styles`/`styleUrls` with a single array string. | | :wrench: | |
 | [`pipe-prefix`](https://github.com/angular-eslint/angular-eslint/blob/main/packages/eslint-plugin/docs/rules/pipe-prefix.md) | Enforce consistent prefix for pipes. | | | |
 | [`prefer-on-push-component-change-detection`](https://github.com/angular-eslint/angular-eslint/blob/main/packages/eslint-plugin/docs/rules/prefer-on-push-component-change-detection.md) | Ensures component's `changeDetection` is set to `ChangeDetectionStrategy.OnPush` | | | :bulb: |
 | [`prefer-output-readonly`](https://github.com/angular-eslint/angular-eslint/blob/main/packages/eslint-plugin/docs/rules/prefer-output-readonly.md) | Prefer to declare `@Output` as `readonly` since they are not supposed to be reassigned | | | :bulb: |