"ERROR: Path does not exist" when using trailing \ on manifest path (submit)

[lars-nvhgroup]

Brief description of your issue

When using "wingetcreate submit "PATH_TO_MANIFEST" and PATH_TO_MANIFEST have a trailing \, it will fail with: "ERROR: Path does not exist".

Steps to reproduce

wingetcreate submit ".\manifests\x\XX\XXX\VERSION.NUMBERS\" fails while wingetcreate submit ".\manifests\x\XX\XXX\VERSION.NUMBERS" does not fail

Expected behavior

A trailing \ should be allowed, and not cause a path error.

Actual behavior

"ERROR: Path does not exist"

Environment

Windows Package Manager Manifest Creator v1.5.7.0

Windows Package Manager (Preview) v1.7.3172-preview
Copyright (c) Microsoft Corporation. All rights reserved.

Windows: Windows.Desktop v10.0.23606.1000
System Architecture: X64
Package: Microsoft.DesktopAppInstaller v1.22.3172.0

Winget Directories
----------------------------------------------------------------------------------------------------- Logs                               %LOCALAPPDATA%\Packages\Microsoft.DesktopAppInstaller_8wekyb3d8bb… User Settings                      %LOCALAPPDATA%\Packages\Microsoft.DesktopAppInstaller_8wekyb3d8bb… Portable Links Directory (User)    %LOCALAPPDATA%\Microsoft\WinGet\Links
Portable Links Directory (Machine) C:\Program Files\WinGet\Links
Portable Package Root (User)       %LOCALAPPDATA%\Microsoft\WinGet\Packages
Portable Package Root              C:\Program Files\WinGet\Packages
Portable Package Root (x86)        C:\Program Files (x86)\WinGet\Packages
Installer Downloads                %USERPROFILE%\Downloads

Links
---------------------------------------------------------------------------
Privacy Statement   https://aka.ms/winget-privacy
License Agreement   https://aka.ms/winget-license
Third Party Notices https://aka.ms/winget-3rdPartyNotice
Homepage            https://aka.ms/winget
Windows Store Terms https://www.microsoft.com/en-us/storedocs/terms-of-sale

Admin Setting                             State
--------------------------------------------------
LocalManifestFiles                        Enabled
BypassCertificatePinningForMicrosoftStore Disabled
InstallerHashOverride                     Disabled
LocalArchiveMalwareScanOverride           Disabled