feat: support cargo-binstall for prebuilt CLI tools (#2659)

Map the existing release ZIP names and binary paths through package metadata, including ARM hard-float, RISC-V, Windows ARM64, and FreeBSD naming exceptions. Document repository-based installation and Windows sidecar requirements.

Fixes #365

README.md

@@ -69,6 +69,13 @@ Install via cargo (Latest development version):
 cargo install --git https://github.com/EasyTier/EasyTier.git easytier
 ```
 
+Install prebuilt CLI tools with [cargo-binstall](https://github.com/cargo-bins/cargo-binstall) (specify an existing release version):
+```bash
+cargo binstall --git https://github.com/EasyTier/EasyTier.git --version 2.6.4 easytier
+```
+
+This installs `easytier-core` and `easytier-cli` using the repository's metadata, independently of crates.io publication. On Windows, also copy the DLL and driver files from the matching release ZIP beside the installed binaries; binstall only installs executables.
+
 [Install pre-built binary](https://github.com/EasyTier/EasyTier/releases) (Recommended, All platforms supported)
 
 For a smaller executable, try [easytier-mini](https://github.com/EasyTier/easytier-mini), which supports basic TCP/UDP networking. See its documentation for supported features and usage.

README_CN.md

@@ -69,6 +69,13 @@ irm "https://github.com/EasyTier/EasyTier/blob/main/script/install.ps1?raw=true"
 cargo install --git https://github.com/EasyTier/EasyTier.git easytier
 ```
 
+通过 [cargo-binstall](https://github.com/cargo-bins/cargo-binstall) 安装预编译命令行工具（请指定已有 release 的版本）：
+```bash
+cargo binstall --git https://github.com/EasyTier/EasyTier.git --version 2.6.4 easytier
+```
+
+此方式使用仓库中的 metadata 安装 `easytier-core` 和 `easytier-cli`，不依赖 crates.io 发布。在 Windows 上，还需将对应 release ZIP 中的 DLL 和驱动文件复制到安装后的程序旁；binstall 只安装可执行文件。
+
 [下载预编译文件](https://github.com/EasyTier/EasyTier/releases)（推荐，支持所有平台）
 
 需要更小的可执行文件，可使用 [easytier-mini](https://github.com/EasyTier/easytier-mini)：支持基础 TCP/UDP 组网，功能范围与使用方式见其文档。

easytier/Cargo.toml

@@ -451,6 +451,44 @@ hotpath-alloc = ["hotpath"]
 # For Network Extension on macOS
 macos-ne = []
 
+[package.metadata.binstall]
+pkg-url = "{ repo }/releases/download/v{ version }/{ name }-{ os-name }-{ target-arch }-v{ version }.zip"
+bin-dir = "{ name }-{ os-name }-{ target-arch }/{ bin }{ binary-ext }"
+pkg-fmt = "zip"
+
+# Release names distinguish hard-float ARM builds from their soft-float peers.
+[package.metadata.binstall.overrides.arm-unknown-linux-musleabihf]
+pkg-url = "{ repo }/releases/download/v{ version }/{ name }-linux-armhf-v{ version }.zip"
+bin-dir = "{ name }-linux-armhf/{ bin }{ binary-ext }"
+
+[package.metadata.binstall.overrides.arm-unknown-linux-gnueabihf]
+pkg-url = "{ repo }/releases/download/v{ version }/{ name }-linux-armhf-v{ version }.zip"
+bin-dir = "{ name }-linux-armhf/{ bin }{ binary-ext }"
+
+[package.metadata.binstall.overrides.armv7-unknown-linux-musleabihf]
+pkg-url = "{ repo }/releases/download/v{ version }/{ name }-linux-armv7hf-v{ version }.zip"
+bin-dir = "{ name }-linux-armv7hf/{ bin }{ binary-ext }"
+
+[package.metadata.binstall.overrides.armv7-unknown-linux-gnueabihf]
+pkg-url = "{ repo }/releases/download/v{ version }/{ name }-linux-armv7hf-v{ version }.zip"
+bin-dir = "{ name }-linux-armv7hf/{ bin }{ binary-ext }"
+
+[package.metadata.binstall.overrides.riscv64gc-unknown-linux-musl]
+pkg-url = "{ repo }/releases/download/v{ version }/{ name }-linux-riscv64-v{ version }.zip"
+bin-dir = "{ name }-linux-riscv64/{ bin }{ binary-ext }"
+
+[package.metadata.binstall.overrides.riscv64gc-unknown-linux-gnu]
+pkg-url = "{ repo }/releases/download/v{ version }/{ name }-linux-riscv64-v{ version }.zip"
+bin-dir = "{ name }-linux-riscv64/{ bin }{ binary-ext }"
+
+[package.metadata.binstall.overrides.aarch64-pc-windows-msvc]
+pkg-url = "{ repo }/releases/download/v{ version }/{ name }-windows-arm64-v{ version }.zip"
+bin-dir = "{ name }-windows-arm64/{ bin }{ binary-ext }"
+
+[package.metadata.binstall.overrides.x86_64-unknown-freebsd]
+pkg-url = "{ repo }/releases/download/v{ version }/{ name }-freebsd-13.2-x86_64-v{ version }.zip"
+bin-dir = "{ name }-freebsd-13.2-x86_64/{ bin }{ binary-ext }"
+
 [package.metadata.cargo-machete]
 ignored = [
     # Used by build/main.rs, including the Windows-only thunk setup.