feat(RES-57): Add visibility to control scope of generated code (#18)

Add visibility parameter: public, package, internal, private
Impacted command: analytics, colors, fonts, images, strings, tags

Reviewed-on: #18

Sources/ResgenSwift/Colors/Model/ParsedColor.swift

@@ -6,14 +6,19 @@
 //
 
 import Foundation
+import ToolCore
 
 struct ParsedColor {
 
+    // MARK: - Properties
+
     let name: String
     let light: String
     let dark: String
 
-    // Generate Contents.json content
+    // MARK: - Contents.json
+
+    /// Generate Contents.json content
     func contentsJSON() -> String {
         let lightARGB = light.colorComponent()
         let darkARGB = dark.colorComponent()
@@ -73,20 +78,24 @@ struct ParsedColor {
         """
     }
 
-    // MARK: - UIKit
+    // MARK: - Property
 
-    func getColorProperty(isStatic: Bool, isSwiftUI: Bool) -> String {
+    func getColorProperty(
+        isStatic: Bool,
+        isSwiftUI: Bool,
+        visibility: ExtensionVisibility
+    ) -> String {
         if isSwiftUI {
             return """
                 /// Color \(name) is \(light) (light) or \(dark) (dark)"
-                \(isStatic ? "static " : "")var \(name): Color {
+                \(visibility) \(isStatic ? "static " : "")var \(name): Color {
                     Color("\(name)")
                 }
             """
         }
         return """
             /// Color \(name) is \(light) (light) or \(dark) (dark)"
-            \(isStatic ? "static " : "@objc ")var \(name): UIColor {
+            \(isStatic ? "" : "@objc ")\(visibility) \(isStatic ? "static " : "")var \(name): UIColor {
                 UIColor(named: "\(name)")!
             }
         """