Expand the GeneratePojo method to allow for input

There are cases where a Limiter requires correlation with information that is external to the Pojo generator. A new limiter should be constructed to handle this.

```
PojoGenerator generator = new PojoGeneratorBuilder<>(YourPojo.class)
.andLimitField("itemId", new ExternalPropertyLimiter(YourExternalObject.class, Supplier))
.build()

generator.generatePojoUsing(instanceOfExternalObject);

```

Start by locating PojoGenerator, PojoGeneratorBuilder, and the existing limiter implementations referenced by the example. Trace how generatePojo currently receives its input and how limiters obtain values; done means an external object can be supplied to generation and correlated limiter behavior is covered by the relevant tests.

Written by the indexing model from the issue text.