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

Sources/ResgenSwift/Strings/Stringium/StringiumOptions.swift

@@ -30,6 +30,9 @@ struct StringiumOptions: 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 String extension. Using default extension name will generate static property.")
     var extensionName: String = Stringium.defaultExtensionName
     
@@ -37,6 +40,8 @@ struct StringiumOptions: ParsableArguments {
     var extensionSuffix: String?
 }
 
+// MARK: - Private var getter
+
 extension StringiumOptions {
     var stringsFileOutputPath: String {
         var outputPath = outputPathRaw
@@ -58,3 +63,24 @@ extension StringiumOptions {
             .map { String($0) }
     }
 }
+
+// MARK: - Computed var
+
+extension StringiumOptions {
+    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
+    }
+}