get-childitem: add page (#6818)

pages/windows/get-childitem.md

@@ -0,0 +1,24 @@
+# Get-ChildItem
+
+> List items in a directory.
+> More information: <https://docs.microsoft.com/powershell/module/microsoft.powershell.management/get-childitem>.
+
+- List all non-hidden items in the current directory:
+
+`Get-ChildItem`
+
+- List only directories in the current directory:
+
+`Get-ChildItem -Directory`
+
+- List only files in the current directory:
+
+`Get-ChildItem -File`
+
+- List items in the current directory, including hidden items:
+
+`Get-ChildItem -Hidden`
+
+- List items in a directory other than the current one:
+
+`Get-ChildItem -Path {{path/to/directory}}`