feat: implement Nginx service with upstream management and configuration generation

apps/api/src/services/nginx.rs

@@ -0,0 +1,31 @@
+pub mod builder;
+pub mod info;
+pub mod traits;
+
+pub mod upstream;
+
+use std::sync::Arc;
+
+use sea_orm::DatabaseConnection;
+
+use upstream::UpstreamService;
+
+pub struct NginxService {
+    connection: Arc<DatabaseConnection>,
+    //
+    upstream_service: Arc<UpstreamService>,
+}
+
+impl NginxService {
+    pub fn new(connection: Arc<DatabaseConnection>) -> Self {
+        Self {
+            connection: connection.clone(),
+            //
+            upstream_service: Arc::new(UpstreamService::new(connection.clone())),
+        }
+    }
+
+    pub fn get_upstream_service(&self) -> Arc<UpstreamService> {
+        self.upstream_service.clone()
+    }
+}