windows/*: add PowerShell pwd and mv equivalents (#11342)

* windows/*: add PowerShell pwd and mv equivalents

* move-item: simplify examples

* move-item: fix typo

* get-location, move-item: add PowerShell-only notice

pages/windows/get-location.md

@@ -0,0 +1,9 @@
+# Get-Location
+
+> Print name of current/working directory.
+> This command can only be run through PowerShell.
+> More information: <https://learn.microsoft.com/powershell/module/microsoft.powershell.management/get-location>.
+
+- Print the current directory:
+
+`Get-Location`