Add options to ToggleGen to be able to change ACL for generated files

ToggleGen/Sources/Core/Generator.swift

@@ -3,10 +3,21 @@
 import Foundation
 
 enum AccessControl: String {
+    enum Error: Swift.Error {
+        case unknownAccessControl
+    }
+
     case `open`
     case `public`
     case `package`
     case `internal`
+
+    init(value: String) throws {
+        guard let accessControl = AccessControl(rawValue: value) else {
+            throw Error.unknownAccessControl
+        }
+        self = accessControl
+    }
 }
 
 struct Constant {

ToggleGen/Sources/ToggleGen.swift

@@ -26,17 +26,27 @@ struct ToggleGen: ParsableCommand {
 
     @Option(name: .long, help: "The path to the folder to write the ToggleVariables file to.")
     var variablesOutputPath: String
-
+
+    @Option(name: .long, help: "Access control level for the variables enum.")
+    var variablesAccessControl: String?
+
+    @Option(name: .long, help: "Access control level for the accessor class.")
+    var accessorAccessControl: String?
+
     mutating func run() throws {
         let datasourceUrl = URL(fileURLWithPath: datasourcePath)
         let generator = try Generator(datasourceUrl: datasourceUrl)
+
+        let variablesAccessControl = try variablesAccessControl.flatMap { try AccessControl(value: $0) }
+        let accessorAccessControl = try accessorAccessControl.flatMap { try AccessControl(value: $0) }
+
         let variablesContent = try generator.generateVariables(variablesTemplatePath: variablesTemplatePath,
                                                                variablesEnumName: variablesEnumName,
-                                                               accessControl: .public)
+                                                               accessControl: variablesAccessControl)
         let accessorContent = try generator.generateAccessor(accessorTemplatePath: accessorTemplatePath,
                                                              variablesEnumName: variablesEnumName,
                                                              accessorClassName: accessorClassName,
-                                                             accessControl: .public)
+                                                             accessControl: accessorAccessControl)
         let writer = Writer()
         try writer.saveAccessor(accessorContent,
                                 outputPath: accessorOutputPath,