Option to indent code in a #region

Prerequisites

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

Summary

When writing code, I depend heavily on regions to keep things clean. Sometimes even nested regions. I would love it if we have the option to indent the code in a region to easily find where a region starts and ends.

#region: Hello World!
Write-Host 'Hello World!
#endregion

Should be (optinally)

#region: Hello World!
    Write-Host 'Hello World!
#endregion

Would be even cooler if the indent is adjustable to 1 or 2 spaces instead of 4

Proposed Design

Add option in the formatter to indent regions and specifying by how many spaces.

从 issue 中描述的 formatter 入口点开始，确定当前如何处理区域边界和缩进。定义可配置的缩进量，并验证格式化在启用该选项时可以选择性地缩进嵌套区域中的代码，而在禁用该选项时保留现有行为。