PowerShell slow startup fix

powershell_slow_startup_fix.ps1

<# USAGE:
& $([scriptblock]::Create((iwr -useb 'https://gist.githubusercontent.com/boredwz/d0bbbd334d49db294d85cebf6b5b19ec/raw/powershell_slow_startup_fix.ps1')))
#>

#requires -Version 5

# Elevate
iwr -useb 'https://gist.githubusercontent.com/boredwz/f7e908dd8d25cc8345ef2065e093d63c/raw/admin.ps1' | iex
If (!(Admin)) {
    Write-Warning 'Administrator rights required.';'Press [Enter] or [Y] to run as Admin...'
    if([Console]::ReadKey($true).Key -match '^(Enter|Y)') {Admin -Elevate $MyInvocation.Line};return
}

# https://stackoverflow.com/a/59343705
# Generate native images for an assembly and its dependencies and install them in the Native Images Cache.
$env:PATH = [Runtime.InteropServices.RuntimeEnvironment]::GetRuntimeDirectory()
[AppDomain]::CurrentDomain.GetAssemblies() | ForEach-Object {
    $path = $_.Location
    if ($path) { 
        $name = Split-Path $path -Leaf
        Write-Host -ForegroundColor Yellow "`r`nRunning ngen.exe on '$name'"
        ngen.exe install $path /nologo
    }
}