Add new Flag to every command to choose if we want to generate static members or not

Sources/ResgenSwift/Images/ImagesOptions.swift

@@ -24,18 +24,33 @@ struct ImagesOptions: ParsableArguments {
     @Option(help: "Path where to generate the extension.", transform: { $0.replaceTiltWithHomeDirectoryPath() })
     var extensionOutputPath: String
     
+    @Option(help: "Tell if it will generate static properties or not")
+    var staticMembers: Bool = false
+    
     @Option(help: "Extension name. If not specified, it will generate an UIImage extension. Using default extension name will generate static property.")
     var extensionName: String = Images.defaultExtensionName
     
     @Option(help: "Extension suffix. Ex: MyApp, it will generate {extensionName}+Image{extensionSuffix}.swift")
-    var extensionSuffix: String = ""
+    var extensionSuffix: String?
 }
 
+// MARK: - Computed var
 
-/*
- swift run -c release Imagium $FORCE_FLAG "./Images/sampleImages.txt" \
-    --xcassets-path "./Images/imagium.xcassets" \
-    --extension-output-path "./Images/Generated" \
-    --extension-name "UIImage" \
-    --extension-suffix "GenAllScript"
- */
+extension ImagesOptions {
+    var extensionFileName: String {
+        if let extensionSuffix = extensionSuffix {
+            return "\(extensionName)+\(extensionSuffix).swift"
+        }
+        return "\(extensionName).swift"
+    }
+    
+    var extensionFilePath: String {
+        "\(extensionOutputPath)/\(extensionFileName)"
+    }
+    
+    var inputFilenameWithoutExt: String {
+        URL(fileURLWithPath: inputFile)
+            .deletingPathExtension()
+            .lastPathComponent
+    }
+}