webserver: separate setup from start

src/webserver.h

@@ -6,9 +6,8 @@
 #include <ESPAsyncWebServer.h>
 #include "ha.h"
 
-AsyncWebServer server(80);
-
 namespace WebServer {
+    AsyncWebServer server(80);
 
     void setup() {
 
@@ -46,7 +45,9 @@ namespace WebServer {
         server.onNotFound([](AsyncWebServerRequest *request) {
             request->send(404, "text/plain", "Not found");
             });
+    }
 
+    void start() {
         server.begin();
     }