LST bin size of 16 seconds is incompatible with correlator

[jack-h]

hera_mc/scripts/correlator_control.py

Line 84 in a1b2c86

LSTbin_size = 16 # seconds

Not sure if LST targetting is being used, but the LST bin size should be a multiple of the correlator's integration granularity which is currently 134.217728 ms.
With BDA and fringe stopping there may be some weird further factors which it would be helpful to accommodate - the least likely LST bin size to cause issues down the road is probably 17.179869184 seconds, which is 2^19 spectra