Installs latest github release of WinGet on Windows

Install-WinGet.ps1

Function Install-WinGet {
    ##########################################################################################################
    <#
    .SYNOPSIS
       Installs the latest github release of WinGet to the local machine.
    
    .DESCRIPTION
         This function downloads the latest release of WinGet from the github repository and installs it to the local machine.
         The function will download the msixbundle and dependencies zip file to a temporary directory, extract the dependencies
         and install the msixbundle. The temporary files will be removed after the installation is complete.
    
    .EXAMPLE
        Install-WinGet
    
    #>
    ##########################################################################################################
    [CmdletBinding()]
    $TempDir = [System.IO.Path]::GetTempPath() + "Install-WinGet\"
    if (-Not (Test-Path -Path "$TempDir")) {
        New-Item -ItemType Directory -Path $TempDir | Out-Null
    }
    try {
        Write-Host "Downloading WinGet. This may take a few minutes..."
        Invoke-WebRequest -Uri "https://github.com/microsoft/winget-cli/releases/latest/download/Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.msixbundle" -OutFile "$($TempDir)Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.msixbundle"
        Invoke-WebRequest -Uri "https://github.com/microsoft/winget-cli/releases/latest/download/DesktopAppInstaller_Dependencies.zip" -OutFile "$($TempDir)DesktopAppInstaller_Dependencies.zip"
    }
    catch {
        Write-Host "Failed to download WinGet. Please check your internet connection and try again. Error: $_"
        return
    }
    try {
        Write-Host "Extracting WinGet dependencies..."
        Expand-Archive -Path "$($TempDir)DesktopAppInstaller_Dependencies.zip" -DestinationPath "$($TempDir)Dependencies"
    }
    catch {
        Write-Host "Failed to extract WinGet dependencies. Error: $_"
        return
    }
    try {
        Write-Host "Installing WinGet..."
        $DependencyFiles = Get-ChildItem -Path "$TempDir\Dependencies\x64" -File | Select-Object -ExpandProperty FullName
        Add-AppxPackage -Path "$($TempDir)Microsoft.DesktopAppInstaller_8wekyb3d8bbwe.msixbundle" -DependencyPath $DependencyFiles
    }
    catch {
        Write-Host "Failed to install WinGet msixbundle. Error: $_"
        return
    }
    Write-Host "WinGet installed successfully."
    try {
        Remove-Item -Path $TempDir -Recurse -Force
    }
    catch {
        Write-Host "Failed to remove temporary files. Please delete the folder $TempDir manually."
    }
}