add schema builder

weed/mq/schema/schema_builder_test.go

@@ -0,0 +1,26 @@
+package schema
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestSchemaBuilder(t *testing.T) {
+	rtb := NewRecordTypeBuilder()
+	rtb.AddStringField("ID").
+		AddLongField("CreatedAt").
+		AddLongField("ModifiedAt").
+		AddStringField("User")
+	recordType := rtb.Build()
+	fmt.Printf("RecordType: %v\n", recordType)
+
+	recordType2 := NewRecordTypeBuilder().
+		AddLongField("ID").
+		AddLongField("CreatedAt").
+		AddRecordField("Person", NewRecordTypeBuilder().
+			AddStringField("Name").
+			AddListField("emails", TypeString)).Build()
+
+	fmt.Printf("RecordType2: %v\n", recordType2)
+
+}