sqs-browse: remove assumption regarding table keys

Table keys are now retrieved from describe

internal/sqs-browse/services/messages/iface.go

@@ -2,9 +2,10 @@ package messages
 
 import (
 	"context"
+
 	"github.com/lmika/awstools/internal/sqs-browse/models"
 )
 
 type MessageSender interface {
 	SendMessage(ctx context.Context, msg models.Message, queue string) (string, error)
-}
+}

internal/sqs-browse/services/messages/service.go

@@ -2,6 +2,7 @@ package messages
 
 import (
 	"context"
+
 	"github.com/lmika/awstools/internal/sqs-browse/models"
 	"github.com/pkg/errors"
 )