Fix workshop script WSL path conversion and convert scripts to Unix line endings; update README with installation instructions

scripts/workshop.ps1

@@ -10,7 +10,8 @@ if (-not (Get-Command wsl.exe -ErrorAction SilentlyContinue)) {
 }
 
 $repoWinPath = (Resolve-Path (Join-Path $PSScriptRoot "..")).Path
-$repoWslPath = (& wsl.exe wslpath -a "$repoWinPath").Trim()
+$drive = $repoWinPath[0].ToString().ToLower()
+$repoWslPath = "/mnt/$drive/" + $repoWinPath.Substring(3) -replace '\\', '/'
 
 if (-not $repoWslPath) {
   Write-Error "Konnte den WSL Pfad fuer das Repo nicht ermitteln."