Add JpaCursorItemReader implementation

[spring-projects-issues]

Michael Minella opened BATCH-2707 and commented

JPA 2.2 added the ability to stream results as a cursor instead of just paging. This story is to explore the practicality of using that API to provide something similar to the functionality provided via the HibernateCursorItemReader but using the JPA APIs.

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Affects: 4.0.1

[fmbenhassine]

Resolved with #3775 .