feat(connection): support native Win32 clients

[hwJinny]

Summary

• add a safe AsstAsyncAttachWindow wrapper and Windows-only exact-window discovery
• add the Win32 connection preset with PID/executable disambiguation and PC platform resources
• route normal maa run tasks through native window attachment without ADB and disable StartUp game launching
• add maa connection test --profile <name> --screencap --json for ADB, PlayCover, and Win32 onboarding probes
• require MaaWin32ControlUnit.dll in the Windows MaaCore installation

Safety

• only visible top-level windows with an exact title are eligible
• optional PID and canonical executable path must match the owning process
• Win32 is compile-time rejected outside Windows and never invokes ADB
• ambiguous matches fail closed

Tests

• Windows x64 all-features Clippy with -D warnings
• Windows x64 release build
• maa-core: 22 passed
• maa-cli: 297 passed, 26 ignored
• Linux x64 Zig build and test-binary compilation

Live verification still required

• attach and screenshot smoke test against each official PC client region on Windows 10/11

Summary by Sourcery

为官方 Windows 客户端新增原生 Win32 连接支持，并加入 CLI 连接测试流程；将基于窗口的附着能力集成到 MaaCore 和 maa-cli 中，同时更新配置、安装程序和文档。

New Features:

• 引入 Win32 连接预设，可在不使用 ADB 的情况下附着到选定的原生 Windows 游戏窗口，并自动加载 PC 平台资源。
• 新增类型化的 Assistant::async_attach_window API 和窗口分辨率工具，以支持对可见的顶层 Win32 窗口进行安全附着，并可选通过 PID 和可执行文件进行区分。
• 暴露 maa connection test CLI 命令，支持截图探测和可选的 JSON 输出，用于验证各预设下已配置连接的有效性。

Enhancements:

• 确保为 Win32 连接准备的任务跳过基于包的游戏启动流程，并在附着到已运行的 PC 客户端时禁用 StartUp.start_game_enabled。
• 扩展配置模式、示例和资源自动选择逻辑，以覆盖 Win32 特定的连接字段和 PC 平台资源。
• 在 Windows 上要求 MaaWin32ControlUnit.dll 与 MaaCore 一同存在，并在安装程序/测试中加入对其存在性的校验。

Tests:

• 添加针对 Win32 连接参数解析、窗口选择与控制单元验证、非 Windows 环境拒绝行为以及连接探测工具的单元测试。
• 更新现有测试以覆盖与 Win32 相关的默认值、模式变更，并确保连接路由在处理 Win32 预设时绝不构造 ADB 请求。

Original summary in English

Summary by Sourcery

Add native Win32 connection support for the official Windows client and a CLI connection test flow, integrating window-based attachment into MaaCore and maa-cli while updating configuration, installer, and docs.

New Features:

• Introduce a Win32 connection preset that attaches to a selected native Windows game window without using ADB and automatically loads PC platform resources.
• Add a typed Assistant::async_attach_window API and window resolution utilities to support safe attachment to visible top-level Win32 windows with optional PID and executable disambiguation.
• Expose a maa connection test CLI command with screenshot probing and optional JSON output to validate configured connections across presets.

Enhancements:

• Ensure tasks prepared for Win32 connections skip package-based game launching and disable StartUp.start_game_enabled when attaching to an already-running PC client.
• Extend configuration schema, examples, and resource auto-selection to cover Win32-specific connection fields and PC platform resources.
• Require MaaWin32ControlUnit.dll alongside MaaCore on Windows and teach the installer/tests to verify its presence.

Tests:

• Add unit tests for Win32 connection argument parsing, window selection and control-unit validation, non-Windows rejection behavior, and connection probing utilities.
• Update existing tests to cover Win32-related defaults, schema changes, and ensure connection routing never constructs ADB requests for Win32 presets.