Add standard CLI support for Image Resizer (#44287)

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fix/what does it change/how was it tested (even manually, if necessary)?
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## Summary of the Pull Request
Adds a dedicated command-line interface (CLI) executable for Image
Resizer (PowerToys.ImageResizerCLI.exe)

## Command
`PowerToys.ImageResizerCLI.exe [options] [files...]`

## Options (High Level)

| Option (aliases) | Description |
|-----------------|-------------|
| `--help` | Show help |
| `--show-config` | Print current effective configuration |
| `--destination`, `-d` | Output directory (optional) |
| `--width`, `-w` | Width |
| `--height`, `-h` | Height |
| `--unit`, `-u` | Unit (Pixel / Percent / Inch / Centimeter) |
| `--fit`, `-f` | Fit mode (Fill / Fit / Stretch) |
| `--size`, `-s` | Preset size index (supports `0` for Custom) |
| `--shrink-only` | Only shrink (do not enlarge) |
| `--replace` | Replace original |
| `--ignore-orientation` | Ignore EXIF orientation |
| `--remove-metadata` | Strip metadata |
| `--quality`, `-q` | JPEG quality (1–100) |
| `--keep-date-modified` | Preserve source last-write time |
| `--file-name` | Output filename format |

## Example usage
```
# Show help
PowerToys.ImageResizerCLI.exe --help

# Show current config
PowerToys.ImageResizerCLI.exe --show-config

# Resize with explicit dimensions
PowerToys.ImageResizerCLI.exe --width 800 --height 600 .\image.png

# Use preset size 0 (Custom) and output to a folder
PowerToys.ImageResizerCLI.exe --size 0 -d "C:\Output" .\photo.png

# Preserve source LastWriteTime
PowerToys.ImageResizerCLI.exe --width 800 --height 600 --keep-date-modified -d "C:\Output" .\image.png
```

![imageresize](https://github.com/user-attachments/assets/437fc1c2-b655-4168-9c85-b1561eeef3b4)

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## PR Checklist

- [ ] Closes: #xxx
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- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [x] **Tests:** Added/updated and all pass
- [x] **Localization:** All end-user-facing strings can be localized
- [x] **Dev docs:** Added/updated
- [x] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

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or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

src/modules/imageresizer/ui/Cli/Commands/ImageResizerRootCommand.cs

@@ -0,0 +1,90 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.CommandLine;
+
+using ImageResizer.Cli.Options;
+
+namespace ImageResizer.Cli.Commands
+{
+    /// <summary>
+    /// Root command for the ImageResizer CLI.
+    /// </summary>
+    public sealed class ImageResizerRootCommand : RootCommand
+    {
+        public ImageResizerRootCommand()
+            : base("PowerToys Image Resizer - Resize images from command line")
+        {
+            HelpOption = new HelpOption();
+            ShowConfigOption = new ShowConfigOption();
+            DestinationOption = new DestinationOption();
+            WidthOption = new WidthOption();
+            HeightOption = new HeightOption();
+            UnitOption = new UnitOption();
+            FitOption = new FitOption();
+            SizeOption = new SizeOption();
+            ShrinkOnlyOption = new ShrinkOnlyOption();
+            ReplaceOption = new ReplaceOption();
+            IgnoreOrientationOption = new IgnoreOrientationOption();
+            RemoveMetadataOption = new RemoveMetadataOption();
+            QualityOption = new QualityOption();
+            KeepDateModifiedOption = new KeepDateModifiedOption();
+            FileNameOption = new FileNameOption();
+            ProgressLinesOption = new ProgressLinesOption();
+            FilesArgument = new FilesArgument();
+
+            AddOption(HelpOption);
+            AddOption(ShowConfigOption);
+            AddOption(DestinationOption);
+            AddOption(WidthOption);
+            AddOption(HeightOption);
+            AddOption(UnitOption);
+            AddOption(FitOption);
+            AddOption(SizeOption);
+            AddOption(ShrinkOnlyOption);
+            AddOption(ReplaceOption);
+            AddOption(IgnoreOrientationOption);
+            AddOption(RemoveMetadataOption);
+            AddOption(QualityOption);
+            AddOption(KeepDateModifiedOption);
+            AddOption(FileNameOption);
+            AddOption(ProgressLinesOption);
+            AddArgument(FilesArgument);
+        }
+
+        public HelpOption HelpOption { get; }
+
+        public ShowConfigOption ShowConfigOption { get; }
+
+        public DestinationOption DestinationOption { get; }
+
+        public WidthOption WidthOption { get; }
+
+        public HeightOption HeightOption { get; }
+
+        public UnitOption UnitOption { get; }
+
+        public FitOption FitOption { get; }
+
+        public SizeOption SizeOption { get; }
+
+        public ShrinkOnlyOption ShrinkOnlyOption { get; }
+
+        public ReplaceOption ReplaceOption { get; }
+
+        public IgnoreOrientationOption IgnoreOrientationOption { get; }
+
+        public RemoveMetadataOption RemoveMetadataOption { get; }
+
+        public QualityOption QualityOption { get; }
+
+        public KeepDateModifiedOption KeepDateModifiedOption { get; }
+
+        public FileNameOption FileNameOption { get; }
+
+        public ProgressLinesOption ProgressLinesOption { get; }
+
+        public FilesArgument FilesArgument { get; }
+    }
+}