Add implementation for AccessibilityNumber

Sources/OpenSwiftUI/Accessibility/internal/AccessibilityNumber.swift

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+//
+//  AccessibilityNumber.swift
+//  OpenSwiftUI
+//
+//  Created by Kyle on 2023/12/2.
+//  Lastest Version: iOS 15.5
+//  Status: Complete
+
+import Foundation
+
+struct AccessibilityNumber {
+    var base: NSNumber
+}
+
+extension AccessibilityNumber: AccessibilityValue {
+    var value: NSNumber { base }
+}
+
+extension AccessibilityNumber: ExpressibleByFloatLiteral {
+    init(floatLiteral value: Double) {
+        base = NSNumber(floatLiteral: value)
+    }
+}
+
+extension AccessibilityNumber: ExpressibleByIntegerLiteral {
+    init(integerLiteral value: Int) {
+        base = NSNumber(integerLiteral: value)
+    }
+}
+
+extension AccessibilityNumber: Codable {
+    init(from decoder: Decoder) throws {
+        let container = try decoder.singleValueContainer()
+        let data = try container.decode(Data.self)
+        self.base = try NSKeyedUnarchiver.unarchivedObject(ofClass: NSNumber.self, from: data)!
+    }
+
+    func encode(to encoder: Encoder) throws {
+        let data = try NSKeyedArchiver.archivedData(withRootObject: base, requiringSecureCoding: true)
+        var container = encoder.singleValueContainer()
+        try container.encode(data)
+    }
+}

Sources/OpenSwiftUI/Accessibility/internal/AccessibilityPlatformSafe.swift

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+//
+//  AccessibilityPlatformSafe.swift
+//  OpenSwiftUI
+//
+//  Created by Kyle on 2023/12/2.
+//  Lastest Version: iOS 15.5
+//  Status: Complete
+
+import Foundation
+
+protocol AccessibilityPlatformSafe {}
+
+extension String: AccessibilityPlatformSafe {}
+extension Double: AccessibilityPlatformSafe {}
+extension Int: AccessibilityPlatformSafe {}
+extension UInt: AccessibilityPlatformSafe {}
+extension UInt8: AccessibilityPlatformSafe {}
+extension Bool: AccessibilityPlatformSafe {}
+extension NSNumber: AccessibilityPlatformSafe {}
+extension Optional: AccessibilityPlatformSafe where Wrapped: AccessibilityPlatformSafe {}

Sources/OpenSwiftUI/Accessibility/internal/AccessibilityValue.swift

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+//
+//  AccessibilityValue.swift
+//  OpenSwiftUI
+//
+//  Created by Kyle on 2023/12/2.
+//  Lastest Version: iOS 15.5
+//  Status: Complete
+
+import Foundation
+
+protocol AccessibilityValue: Equatable {
+    associatedtype PlatformValue: AccessibilityPlatformSafe
+    var localizedDescription: String? { get }
+    var displayDescription: String? { get }
+    var value: PlatformValue { get }
+    var minValue: PlatformValue? { get }
+    var maxValue: PlatformValue? { get }
+    var step: PlatformValue? { get }
+    static var type: AnyAccessibilityValueType { get }
+}
+
+extension AccessibilityValue where PlatformValue: NSNumber {
+    var localizedDescription: String? {
+        NumberFormatter.localizedString(from: value, number: .decimal)
+    }
+
+    var displayDescription: String? {
+        NumberFormatter.localizedString(from: value, number: .decimal)
+    }
+
+    var minValue: NSNumber? { nil }
+    var maxValue: NSNumber? { nil }
+    var step: NSNumber? { nil }
+    static var type: AnyAccessibilityValueType { .number }
+}

Sources/OpenSwiftUI/Accessibility/internal/AnyAccessibilityValueType.swift

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+//
+//  AnyAccessibilityValueType.swift
+//  OpenSwiftUI
+//
+//  Created by Kyle on 2023/12/2.
+//  Lastest Version: iOS 15.5
+//  Status: Complete
+
+enum AnyAccessibilityValueType: UInt {
+    case int
+    case double
+    case bool
+    case string
+    case disclosure
+    case toggle
+    case slider
+    case stepper
+    case progress
+    case boundedNumber
+    case headingLevel
+    case number
+}