Save items to same folder under "webp"

[ijjimem]

I've made some changes to your powershell code for global usage to save the files in the same directory under webp.

md "$directory/webp"
cd "$directory/webp"
Get-ChildItem $Directory | ForEach-Object {
cwebp.exe -q $compressionFactor -mt -m $compmethod $.fullname -o "$($.basename).webp"
}
$PSScriptRoot

implement it better if you can and repost :)

[ijjimem]

Also i have fixed the double extensions in the script.

filename.png.webp >> filename.webp

by using basename instead of name