support to bytea added, passed the test in gen_test.go, not sure if it will work in all situations, please review (#109)

Author: eullerpereira94

internal/dinosql/gen.go

@@ -489,6 +489,9 @@ func (r Result) goInnerType(columnType string, notNull bool) string {
 	case "jsonb":
 		return "json.RawMessage"
 
+	case "bytea", "pg_catalog.bytea":
+		return "[]byte"
+
 	case "pg_catalog.timestamp", "pg_catalog.timestamptz":
 		if notNull {
 			return "time.Time"

internal/dinosql/gen_test.go

@@ -30,6 +30,11 @@ func TestColumnsToStruct(t *testing.T) {
 			NotNull:  true,
 			IsArray:  true,
 		},
+		{
+			Name:     "byte_seq",
+			DataType: "bytea",
+			NotNull:  true,
+		},
 	}
 
 	r := Result{}
@@ -41,6 +46,7 @@ func TestColumnsToStruct(t *testing.T) {
 			{Name: "Count", Type: "int64", Tags: map[string]string{"json:": "count"}},
 			{Name: "Count_2", Type: "int64", Tags: map[string]string{"json:": "count_2"}},
 			{Name: "Tags", Type: "[]string", Tags: map[string]string{"json:": "tags"}},
+			{Name: "ByteSeq", Type: "[]byte", Tags: map[string]string{"json:": "byte_seq"}},
 		},
 	}
 	if diff := cmp.Diff(expected, actual); diff != "" {