Add project files.

Program.cs

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+using RagePhoto;
+using System.CommandLine;
+using System.Text;
+
+internal static class Program {
+
+    private static void Main(String[] args) {
+
+        Argument<FileInfo> photoArgument = new("photo") {
+            Description = "Photo File"
+        };
+        Argument<String> dataTypeArgument = new("dataType") {
+            Description = "Data Type",
+            DefaultValueFactory = _ => "jpeg"
+        };
+        Option<String> outputOption = new("output", "o") {
+            Description = "Output",
+            DefaultValueFactory = _ => "-"
+        };
+        Command getCommand = new("get", "Get Photo Data") {
+            photoArgument, dataTypeArgument, outputOption
+        };
+        getCommand.SetAction(result => Get(
+            result.GetRequiredValue(photoArgument),
+            result.GetRequiredValue(dataTypeArgument),
+            result.GetRequiredValue(outputOption)));
+
+        RootCommand rootCommand = new("ragephoto-cli Application") {
+            getCommand
+        };
+
+        rootCommand.Parse(args).Invoke();
+    }
+
+    private static void Get(FileInfo photoFile, String dataType, String outputFile) {
+        try {
+            using Photo photo = new();
+            photo.LoadFile(photoFile.FullName);
+
+            Byte[] content = [];
+            switch (dataType.ToLowerInvariant()) {
+                case "format":
+                    content = Encoding.UTF8.GetBytes(photo.Format switch {
+                        PhotoFormat.GTA5 => "gta5",
+                        PhotoFormat.RDR2 => "rdr2",
+                        _ => "unknown"
+                    });
+                    break;
+                case "jpeg":
+                    content = photo.Jpeg;
+                    break;
+                case "json":
+                    content = Encoding.UTF8.GetBytes(photo.Json);
+                    break;
+                case "sign":
+                    content = Encoding.UTF8.GetBytes($"{photo.Sign}");
+                    break;
+                case "title":
+                    content = Encoding.UTF8.GetBytes(photo.Title);
+                    break;
+                default:
+                    Console.Error.WriteLine($"Unknown Content Type: {dataType}");
+                    Environment.Exit(1);
+                    break;
+            }
+
+            Stream output = outputFile == "-" ? Console.OpenStandardOutput() : File.Create(outputFile);
+            output.Write(content);
+        }
+        catch (RagePhotoException exception) {
+            Console.Error.WriteLine(exception.Message);
+            Environment.Exit(exception.Photo != null ? (Int32)exception.Error + 2 : -1);
+        }
+        catch (Exception exception) {
+            Console.Error.WriteLine(exception.Message);
+            Environment.Exit(-1);
+        }
+    }
+}