Add query related validations

[wparad]

const keyExpressionTokens = parseExpression(originalParams.KeyConditionExpression);
    const filterExpressionTokens = parseExpression(originalParams.FilterExpression);
    const matchingFilterExpressionKey = Object.keys(filterExpressionTokens.keys).some(filterKey => Object.keys(keyExpressionTokens.keys)
    .some(keyKey => originalParams.ExpressionAttributeNames[keyKey] === originalParams.ExpressionAttributeNames[filterKey]));
    
    // TODO: convert this from a error generation to in memory filtering
    if (matchingFilterExpressionKey) {
      throw new DynamoDbError({ title: 'DynamoDB disallows having a FilterExpression contain ', key: matchingFilterExpressionKey, parameters: originalParams }, 'InvalidExpression');
    }