Add clear downloads utility script

imageflow_core/clear_downloaded_images.ps1

@@ -0,0 +1,31 @@
+# Get the script's directory (assumed to be imageflow_core)
+$scriptDir = $PSScriptRoot
+
+# Set the source and destination directories relative to the script location
+$sourceDir = Join-Path $scriptDir "tests" "visuals"
+$backupDir = Join-Path $sourceDir "_backup"
+
+# Create the backup directory if it doesn't exist
+if (-not (Test-Path $backupDir)) {
+    New-Item -ItemType Directory -Path $backupDir | Out-Null
+    Write-Host "Created backup directory: $backupDir"
+}
+
+# Get all PNG, JPG, and WebP files in the source directory
+$files = Get-ChildItem -Path $sourceDir -File -Include "*.png", "*.jpg", "*.jpeg", "*.webp"
+
+foreach ($file in $files) {
+    $destPath = Join-Path $backupDir $file.Name
+
+    # Check if the file already exists in the backup directory
+    if (Test-Path $destPath) {
+        Write-Host "Skipping $($file.Name) - already exists in backup directory"
+    } else {
+        # Move the file to the backup directory
+        Move-Item -Path $file.FullName -Destination $destPath
+        Write-Host "Moved $($file.Name) to backup directory"
+    }
+}
+
+Write-Host "Operation completed. Check $backupDir for moved files."
+Write-Host "Source directory: $sourceDir"