HIT L1B CDF Creation for SIT-3 (IMAP-Science-Operations-Center#616)

* Create hit l1b processing for SIT-3. Will need to complete this work once sample data is available. Update fill_val for cdf attrs with float values.

* Add l1b processing to HIT section in cli.py

* Add tests for hit housekeeping l1b product

* Update imap_processing/hit/l1b/hit_l1b.py

simplify line of code

Co-authored-by: Greg Lucas <greg.m.lucas@gmail.com>

* Update imap_processing/hit/l1b/hit_l1b.py

simplify creating array of 1 values using np.ones()

Co-authored-by: Greg Lucas <greg.m.lucas@gmail.com>

* Remove path to cdf file and instead call l1a function to create the cdf file needed for l1b processing

* Update shape of adc_channels and leak_i. Use np.ones() to create arrays with one values.

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Co-authored-by: Greg Lucas <greg.m.lucas@gmail.com>

Update to version 0.2.0

Workflow now triggers only on published release