Better text viewing in Check UEFI PK, KEK, DB and DBX.ps1

[BillyRazOr]

I added some colors and updated Write-Host title for better text viewing. (I'm not an expert programming or anything else, I just make some a bit better look for it.)

Before

CMD version:

Powershell version (Terminal):

After

CMD version:

Powershell version (Terminal):

Those colors at $revoked would change depends on user's PC revocation applies:

$esc = [char]0x1b
switch ($revoked) {
'True' {
# Green color (92m)
return "${esc}[92mTrue${esc}[0m"
}
'False' {
# Cyan color (96m)
return "${esc}[96mFalse${esc}[0m"
}
'Unknown' {
# Yellow color (93m)
return "${esc}[93mUnknown${esc}[0m"

I updated text headers for better viewing like this:
Write-Host $fgGreen$bgWhite======$reset $fgGreen$bold'Current UEFI KEK'$reset $fgGreen$bgWhite======$reset

Hope this helps.