feat: Initialize UPFS project with login and file upload functionality

- Add Cargo.toml with dependencies for reqwest, serde, tokio, and clap.
- Implement login functionality to retrieve authentication token.
- Create a module for handling file uploads with multipart support.
- Set up command-line interface for file upload operations.
- Include error handling for file existence and HTTP requests.

src/main.rs

@@ -0,0 +1,83 @@
+mod login;
+mod update;
+
+use clap::Parser;
+use login::login_and_get_token;
+use update::upload_file;
+use std::process;
+
+#[derive(Parser)]
+#[command(name = "upfs")]
+#[command(about = "Upload file to UPFS server")]
+struct Cli {
+    /// File path to upload
+    #[arg(short, long)]
+    file: String,
+
+    /// Remote file path on server
+    #[arg(short, long)]
+    remote_path: String,
+
+    /// Username for authentication
+    #[arg(short, long, default_value = "admin")]
+    username: String,
+
+    /// Password for authentication
+    #[arg(short, long)]
+    password: Option<String>,
+}
+
+#[tokio::main]
+async fn main() {
+    let cli = Cli::parse();
+
+    // 检查文件是否存在
+    if !std::path::Path::new(&cli.file).exists() {
+        eprintln!("错误: 文件 '{}' 不存在", cli.file);
+        process::exit(1);
+    }
+
+    // 获取密码（如果没有提供则询问）
+    let password = match cli.password {
+        Some(pwd) => pwd,
+        None => {
+            println!("请输入密码:");
+            let mut input = String::new();
+            std::io::stdin().read_line(&mut input).expect("读取密码失败");
+            input.trim().to_string()
+        }
+    };
+
+    println!("正在登录服务器...");
+
+    // 登录获取token
+    let token = match login_and_get_token(cli.username, password).await {
+        Ok(token) => {
+            println!("登录成功!");
+            token
+        }
+        Err(e) => {
+            eprintln!("登录失败: {}", e);
+            process::exit(1);
+        }
+    };
+
+    println!("正在上传文件: {} 到远程路径: {}", cli.file, cli.remote_path);
+
+    // 上传文件
+    match upload_file(token, &cli.file, &cli.remote_path).await {
+        Ok((true, response)) => {
+            println!("✅ 文件上传成功!");
+            println!("服务器响应: {}", response);
+        }
+        Ok((false, response)) => {
+            println!("❌ 文件上传失败!");
+            println!("服务器响应: {}", response);
+            process::exit(1);
+        }
+        Err(e) => {
+            eprintln!("上传过程中发生错误: {}", e);
+            process::exit(1);
+        }
+    }
+}