feat: repetitions support for ScalaNWBReader

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 12.50000% with 14 lines in your changes missing coverage. Please review.

Project coverage is 72.24%. Comparing base (4bfe32a) to head (57d2092). Report is 35 commits behind head on master.

Files with missing lines	Patch %	Lines
bluepyefe/nwbreader.py	12.50%	14 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #194 +/- ## ========================================== - Coverage 73.78% 72.24% -1.55% ========================================== Files 38 38 Lines 2415 2497 +82 ========================================== + Hits 1782 1804 +22 - Misses 633 693 +60 ```

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