Array indent style (code formatting)

Prerequisites

• I have written a descriptive issue title.
• I have searched all issues to ensure it has not already been reported.

Summary

Request a setting like pipelineIndentationStyle but for arrays.

Formatting removes my indents:

$folders = "\.git",
"\exampleSite",
"\images",
"\logo.png"

Would be nice to have:

$folders = "\.git",
           "\exampleSite",
           "\images",
           "\logo.png"

And this (first item on new line):

$folders =
    "\.git",
    "\exampleSite",
    "\images",
    "\logo.png"

Proposed Design

No response

首先定位现有的 pipelineIndentationStyle 设置，以及实现该设置的 formatter 代码和测试。将请求的数组示例与当前的格式化行为进行比较，然后定义该设置应如何应用于数组，并验证内联延续和第一个元素位于新行的情况。完成的标准是：所选择的行为已由 formatter 测试覆盖，并作为一项设置编写了文档。