fix(model-decorator): remove limitation for index creation
fix(model-decorator): remove limitation for index creation

it is not our job to make assumptions about such limitations, removing the check. Also the check was not correct. By default 5 LSI and 20 GSI are allowed.(https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Limits.html#limits-secondary-indexes)

shiftcode/dynamo-easy,shiftcode/dynamo-easy