move server/* to scnserver/*

scnserver/push/notificationClient.go

@@ -0,0 +1,10 @@
+package push
+
+import (
+	"blackforestbytes.com/simplecloudnotifier/models"
+	"context"
+)
+
+type NotificationClient interface {
+	SendNotification(ctx context.Context, client models.Client, msg models.Message) (string, error)
+}