New Rule: 默认开启 no-unneeded-ternary

https://eslint.org/docs/rules/no-unneeded-ternary

`no-unneeded-ternary` 检查非必要的三元表达式。

```javascript
// Bad
var isYes = answer === 1 ? true : false;

// Good
var isYes = answer === 1;


// Bad
var isNo = answer === 1 ? false : true;

// Good
var isNo = answer !== 1;

// Bad
foo(bar ? bar : 1);

// Good
foo(bar || 1);
```