Rule proposal: require specifiers in import/export declaration

### Description

https://github.com/sindresorhus/eslint-plugin-unicorn/pull/2679

### Examples

```js
// ❌
import {} from "foo";

// ✅
import "foo";
```

```js
// ❌
export {}
```

```js
// ❌
export {} from "foo";
```

### Proposed rule name

`require-module-specifiers`


### Additional Info

_No response_