feat: 添加新的登录模块及相关组件

主要变更：
1. 新增 EPLoginViewController 和 EPLoginTypesViewController，提供新的登录界面和功能。
2. 引入 EPLoginInputView 和 EPLoginButton 组件，支持输入框和按钮的自定义。
3. 实现 EPLoginService 和 EPLoginManager，封装登录逻辑和 API 请求。
4. 添加 EPLoginConfig 和 EPLoginState，统一配置和状态管理。
5. 更新 Bridging Header，确保 Swift 和 Objective-C 代码的互操作性。

此更新旨在提升用户登录体验，简化登录流程，并提供更好的代码结构和可维护性。

YuMi/E-P/NewLogin/Views/EPLoginButton.swift

@@ -0,0 +1,131 @@
+//
+//  EPLoginButton.swift
+//  YuMi
+//
+//  Created by AI on 2025-01-27.
+//  登录按钮组件 - 使用 StackView 实现 icon 左侧固定 + title 居中
+//
+
+import UIKit
+import SnapKit
+
+/// 登录按钮点击代理
+protocol EPLoginButtonDelegate: AnyObject {
+    func loginButtonDidTap(_ button: EPLoginButton)
+}
+
+/// 登录按钮组件
+class EPLoginButton: UIControl {
+    
+    // MARK: - Properties
+    
+    weak var delegate: EPLoginButtonDelegate?
+    
+    private let stackView = UIStackView()
+    private let iconImageView = UIImageView()
+    private let titleLabel = UILabel()
+    private let leftSpacer = UIView()
+    private let rightSpacer = UIView()
+    
+    // MARK: - Initialization
+    
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        setupUI()
+    }
+    
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+    
+    // MARK: - Setup
+    
+    private func setupUI() {
+        backgroundColor = EPLoginConfig.Colors.background
+        layer.cornerRadius = EPLoginConfig.Layout.cornerRadius
+        
+        // StackView 配置
+        stackView.axis = .horizontal
+        stackView.alignment = .center
+        stackView.distribution = .fill
+        stackView.spacing = 0
+        stackView.isUserInteractionEnabled = false
+        addSubview(stackView)
+        
+        // Icon
+        iconImageView.contentMode = .scaleAspectFit
+        
+        // Title
+        titleLabel.font = .systemFont(ofSize: EPLoginConfig.Layout.inputFontSize, weight: .semibold)
+        titleLabel.textColor = EPLoginConfig.Colors.text
+        titleLabel.textAlignment = .center
+        
+        // Spacers - 让 title 居中
+        leftSpacer.setContentHuggingPriority(.defaultLow, for: .horizontal)
+        rightSpacer.setContentHuggingPriority(.defaultLow, for: .horizontal)
+        
+        // 布局顺序: [Leading 33] + [Icon] + [Flexible Spacer] + [Title] + [Flexible Spacer] + [Trailing 33]
+        let leadingPadding = UIView()
+        let trailingPadding = UIView()
+        
+        stackView.addArrangedSubview(leadingPadding)
+        stackView.addArrangedSubview(iconImageView)
+        stackView.addArrangedSubview(leftSpacer)
+        stackView.addArrangedSubview(titleLabel)
+        stackView.addArrangedSubview(rightSpacer)
+        stackView.addArrangedSubview(trailingPadding)
+        
+        // 约束
+        stackView.snp.makeConstraints { make in
+            make.edges.equalToSuperview()
+        }
+        
+        leadingPadding.snp.makeConstraints { make in
+            make.width.equalTo(EPLoginConfig.Layout.loginButtonIconLeading)
+        }
+        
+        iconImageView.snp.makeConstraints { make in
+            make.size.equalTo(EPLoginConfig.Layout.loginButtonIconSize)
+        }
+        
+        trailingPadding.snp.makeConstraints { make in
+            make.width.equalTo(EPLoginConfig.Layout.loginButtonIconLeading)
+        }
+        
+        // 设置 leftSpacer 和 rightSpacer 宽度相等，实现 title 居中
+        leftSpacer.snp.makeConstraints { make in
+            make.width.equalTo(rightSpacer)
+        }
+        
+        // 添加点击事件
+        addTarget(self, action: #selector(handleTap), for: .touchUpInside)
+    }
+    
+    // MARK: - Configuration
+    
+    /// 配置按钮
+    /// - Parameters:
+    ///   - icon: 图标名称
+    ///   - title: 标题文字
+    func configure(icon: String, title: String) {
+        iconImageView.image = kImage(icon)
+        titleLabel.text = title
+    }
+    
+    // MARK: - Actions
+    
+    @objc private func handleTap() {
+        delegate?.loginButtonDidTap(self)
+    }
+    
+    // MARK: - Touch Feedback
+    
+    override var isHighlighted: Bool {
+        didSet {
+            UIView.animate(withDuration: 0.1) {
+                self.alpha = self.isHighlighted ? 0.7 : 1.0
+            }
+        }
+    }
+}
+