Make max. number of calculated occurrences configurable

[axunonb]

Replace the constant _maxIncrementCount with a configurable variable Note: The default should be "Infinite", but for occurences without an end date a limitation can be useful

https://github.com/ical-org/ical.net/blob/95bbc53991009e64c208b827f3c89bd49680c6bc/Ical.Net/Evaluation/RecurrencePatternEvaluator.cs#L49-L52