Allow for setting of pagination limit in SimplePaginatedList

[ctgraham]

SimplePaginatedList->limit is a protected property with a default value of 10 and no setter:

php-alma-client/src/Model/SimplePaginatedList.php

Line 19 in 536c67f

protected $limit = 10;

Legitimate values, for endpoints supporting the limit parameter, are 0 - 100.