cleanup and refactoring of notification

close rabbit and redis connexion on application close
Refactoring of Configuration class
fix notification id increment
Add builder for NotificationPush
Add close to notificationPush to remove listener
Clean tags of tests
purge queue before functional tests

src/test/kotlin/functional/MailerTest.kt

@@ -11,6 +11,7 @@ import io.ktor.server.testing.withTestApplication
 import io.ktor.util.KtorExperimentalAPI
 import kotlinx.coroutines.InternalCoroutinesApi
 import org.junit.jupiter.api.Tag
+import org.junit.jupiter.api.Tags
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.TestInstance
 import org.koin.test.AutoCloseKoinTest
@@ -20,10 +21,11 @@ import org.koin.test.get
 @KtorExperimentalLocationsAPI
 @KtorExperimentalAPI
 @TestInstance(TestInstance.Lifecycle.PER_CLASS)
+@Tags(Tag("functional"))
 class MailerTest : KoinTest, AutoCloseKoinTest() {
     @InternalCoroutinesApi
     @Test
-    @Tag("online, functional")
+    @Tags(Tag("online"))
     fun `can be send an email`() {
         withTestApplication({ module(TEST) }) {
             get<Mailer>().sendEmail {