Invoke-ScriptAnalyzer required Path parameter

首先定位 Invoke-ScriptAnalyzer 命令的实现及其 Path 参数的定义。检查省略 Path 时命令的行为，然后验证不带参数调用 Invoke-ScriptAnalyzer 会针对当前目录运行，且不会提示输入 Path。

The required -Path parameter is a usability concern. It should default to . removing the need for the required parameter.

Is there a reason or design choice of why this parameter is required without a default value?

Steps to reproduces

Invoke-ScriptAnalyzer

Expected behavior

# just runs
Invoke-ScriptAnalyzer

Actual behavior

Invoke-ScriptAnalyzer

cmdlet Invoke-ScriptAnalyzer at command pipeline position 1
Supply values for the following parameters:
Path:

If an unexpected error was thrown then please report the full error details using e.g. $error[0] | Select-Object *

Environment data

> $psversiontable

Name                           Value
----                           -----
PSVersion                      7.3.2
PSEdition                      Core
GitCommitId                    7.3.2
OS                             Microsoft Windows 10.0.19044
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

> (Get-Module -ListAvailable PSScriptAnalyzer).Version | ForEach-Object { $_.ToString() }

1.21.0
1.20.0
1.19.1
1.18.3