feat(cli): add ms microservice template support

1. 新增`ms`微服务模板，包含共享项目、微服务、网关、应用等完整架构
2. 为`hua new`命令添加`ms`模板选项并更新文档
3. 将模板文件嵌入CLI项目输出目录
4. 实现微服务模板的项目构建逻辑，自动安装并使用dotnet自定义模板创建项目

templates/ms/applications/Company.Project.BackendAdminApp.Host/Startup.cs

@@ -0,0 +1,18 @@
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+
+namespace Company.Project.BackendAdminApp;
+
+public class Startup
+{
+    public void ConfigureServices(IServiceCollection services)
+    {
+        services.AddApplication<BackendAdminAppHostModule>();
+    }
+
+    public void Configure(IApplicationBuilder app, IHostEnvironment env)
+    {
+        app.InitializeApplication();
+    }
+}