Band noise and system noise

[abhisrkckl]

The band noise lines produced by TEMPONEST look like this:
TNBandNoise 0 960 -14.0997 2.82109 200
The format is
TNBandNoise <freq1> <freq2> <Amp> <Gamma> <Nharms>

Similarly, system noise looks like this.

TNGroupNoise -group UWL_sbE -17.5612 1.79182 100
TNGroupNoise -group WBCORR_10CM -12.9854 1.72082 200

I think this is not a good representation for PINT, given our troubles with pairParameters. These have 5 entries each in one line and no way to represent uncertainties :(

It's probably best to develop something that fits better with PINT's style and add a convert-on-read feature.