feat: implement Nginx service with upstream management and configuration generation

apps/api/src/services.rs

@@ -1,5 +1,6 @@
 pub mod agent_client;
 pub mod auth;
+pub mod nginx;
 pub mod server_state;
 pub mod settings;
 
@@ -15,6 +16,7 @@ use crate::{
             authentication::{AuthenticationServiceImpl, strategies::password::PasswordStrategy},
             user::{UserService, UserServiceImpl},
         },
+        nginx::NginxService,
         server_state::{ServerStateService, ServerStateStore},
         settings::{SettingsService, SettingsStore},
     },
@@ -28,6 +30,8 @@ pub struct AppService {
     pub user: ServiceState<dyn UserService>,
     pub server_state: ServiceState<dyn ServerStateStore>,
     #[allow(dead_code)]
+    pub nginx: ServiceState<NginxService>,
+    #[allow(dead_code)]
     pub agent_client: ServiceState<agent_client::AgentService>,
 }
 
@@ -47,6 +51,7 @@ pub fn get_app_service(
             )),
         },
         user: Arc::new(UserServiceImpl::new(db_connection.clone())),
+        nginx: Arc::new(NginxService::new(db_connection.clone())),
         agent_client: Arc::new(agent_client::AgentService::new(Configuration::from(
             settings.agent.clone(),
         ))),