sqs-browse: added notion of workspaces in sqs-browse

Also added a tool to generate test tables

internal/sqs-browse/providers/stormstore/memstore.go

@@ -0,0 +1,30 @@
+package stormstore
+
+import (
+	"context"
+	"github.com/asdine/storm"
+	"github.com/lmika/awstools/internal/sqs-browse/models"
+	"github.com/pkg/errors"
+)
+
+type Store struct {
+	db *storm.DB
+}
+
+// TODO: should probably be a workspace provider
+func NewStore(filename string) (*Store, error) {
+	db, err := storm.Open(filename)
+	if err != nil {
+		return nil, errors.Wrapf(err, "cannot open store %v", filename)
+	}
+
+	return &Store{db: db}, nil
+}
+
+func (s *Store) Close() {
+	s.db.Close()
+}
+
+func (s *Store) Save(ctx context.Context, msg *models.Message) error {
+	return s.db.Save(msg)
+}