Add command to generate Colors

Package.swift

@@ -14,13 +14,22 @@ let package = Package(
         // Targets can depend on other targets in this package, and on products in packages this package depends on.
         .target(
             name: "ResgenSwift",
-            dependencies: ["FontToolCore"]),
+            dependencies: ["FontToolCore", "ColorToolCore"]
+        ),
         .target(
             name: "FontToolCore",
             dependencies: [
                 "CLIToolCore",
                 .product(name: "ArgumentParser", package: "swift-argument-parser")
-            ]),
+            ]
+        ),
+        .target(
+            name: "ColorToolCore",
+            dependencies: [
+                "CLIToolCore",
+                .product(name: "ArgumentParser", package: "swift-argument-parser")
+            ]
+        ),
         // Helper targets
         .target(name: "CLIToolCore"),
         // Test targets