Update Jooq Repository ConditionalFieldBounds to improve reusability

[edwin-greene]

Problem

Make the ConditionalFieldBounds more reusable to support future Rest-Java endpoints.

Solution

Combine Bound and FieldBound by moving field into Bound, and update ConditionalFieldBounds to support n-numbered fields. Plus maybe we can put an interface on the TokenAirdropRequest to use as this.

See comments from the Outstanding Token Airdrops PR

Alternatives

No response