Add health check

app/src/main/kotlin/routes/Router.kt

@@ -2,10 +2,7 @@ package be.simplenotes.app.routes
 
 import be.simplenotes.app.api.ApiNoteController
 import be.simplenotes.app.api.ApiUserController
-import be.simplenotes.app.controllers.BaseController
-import be.simplenotes.app.controllers.NoteController
-import be.simplenotes.app.controllers.SettingsController
-import be.simplenotes.app.controllers.UserController
+import be.simplenotes.app.controllers.*
 import be.simplenotes.app.filters.*
 import be.simplenotes.domain.security.JwtPayload
 import org.http4k.core.*
@@ -22,6 +19,7 @@ class Router(
     private val settingsController: SettingsController,
     private val apiUserController: ApiUserController,
     private val apiNoteController: ApiNoteController,
+    private val healthCheckController: HealthCheckController,
     private val requiredAuth: Filter,
     private val optionalAuth: Filter,
     private val apiAuth: Filter,
@@ -31,7 +29,11 @@ class Router(
 ) {
     operator fun invoke(): RoutingHttpHandler {
 
-        val basicRoutes = ImmutableFilter.then(static(Classpath("/static"), "woff2" to ContentType("font/woff2")))
+        val basicRoutes =
+            routes(
+                "/health" bind GET to healthCheckController::healthCheck,
+                ImmutableFilter.then(static(Classpath("/static"), "woff2" to ContentType("font/woff2")))
+            )
 
         val publicRoutes = routes(
             "/" bind GET public baseController::index,