Merged in feature/shorttestsanddirtidy (pull request #26)

Add short tests and Tidy internal directories

* complete the tasks

internal/server/queue/config.go

@@ -0,0 +1,17 @@
+package queue
+
+import (
+	"context"
+
+	"github.com/aws/aws-sdk-go-v2/service/sqs"
+	"github.com/aws/aws-sdk-go-v2/service/sqs/types"
+)
+
+type Config struct {
+	URL    string
+	Client *sqs.Client
+}
+
+type Controller interface {
+	Process(ctx context.Context, config *Config, msg *types.Message) error
+}