Make dR hit to jet configurable

Description

• Make the dR(jet,hit) configurable (and not hard-coded)
• Change hits.n_to_save to hits.output_size to not have many names for the same thing

Tests

1. No decorators & no hits block

Runs as expected

2. Hit decorators requested & no hits block

Code crashes

3. Decorators requested with hits block present but with hits.output_size = 0

Runs and saves only the decorators (no hits dataset saved)

4. Both hits and decorators requested with hits.output_size > 0

Everything saved in the h5 file

5. Only hits requested and no decorators requested

Saves only hits without the decorators

Items from #40