generate new nr number

[eve-git]

Issue #, if available:
bcgov/entity#21856

Description of changes:
Generate a new NR. The logic is the same as in Oracle package NRO_UTIL_PCG.get_new_nr_num

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[EPortman]

I think there might be a typo here.

if random_num < floor or random > ceiling:
         continue

Should this be random_num instead of random? Also is this check necessary as the random.randInt gets a random number already in this range?

[EPortman]

Looks great!