Merge pull request 'watchdog-be: f ktor' (#16) from watchdog-be into master

Reviewed-on: #16

watch-dog-be/src/main/kotlin/dev/usbharu/unos/watchdog/be/Main.kt

@@ -34,6 +34,9 @@ fun Application.module() {
         allowHost(frontEndUrl.authority, schemes = listOf(frontEndUrl.scheme))
         allowCredentials = true
         allowNonSimpleContentTypes = true
+        allowHeaders {
+            true
+        }
     }
     install(CallLogging){
         level = Level.TRACE