Add a METplus use case to demonstrate the use of EOL sounding composite data

[hsoh-u]

This is from the helpdesk ticket (https://rt.rap.ucar.edu/rt/Ticket/Display.html?id=91017). This was requested by Jeremiah Otero Piersante (otero@rams.colostate.edu).

The EOL soundings:
Data Type: National Weather Service Sounding/Ascending
Project ID: PLOWS
Release Site Type/Site ID: KFWD Fort Worth, TX / 72249
Release Location (lon,lat,alt): 097 17.88'W, 32 50.10'N, -97.298, 32.835, 195.0
UTC Release Time (y,m,d,h,m,s): 2010, 02, 28, 23:03:54
Ascension Number: 122
Radiosonde Serial Number: 85131966
Balloon Manufacturer/Type: Totex / GP26
Balloon Lot Number/Weight: 2009 / 0.600
Radiosonde Type/RH Sensor Type: Sippican Mark IIA with chip thermistor, pressure / Sippican Mark IIA Carbon Hygristor
Surface Observations: P: 986.9, T: 4.9, RH: 35.0, WS: 6.2, WD: 125.0
Nominal Release Time (y,m,d,h,m,s):2010, 03, 01, 00:00:00
Time Press Temp Dewpt RH Ucmp Vcmp spd dir Wcmp Lon Lat Ele Azi Alt Qp Qt Qrh Qu Qv QdZ
sec mb C C % m/s m/s m/s deg m/s deg deg deg deg m code code code code code code

Account Key: 2702691 - DTC NCAR Base

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0.0 986.8 15.9 0.5 35.0 -6.5 3.2 7.2 116.2 999.0 -97.298 32.835 999.0 999.0 195.0 3.0 3.0 3.0 1.0 1.0 9.0

[DanielAdriaansen]

The sample header sent was from the PLOWS field campaign. Sounding data from this field campaign can be found here:
https://data.eol.ucar.edu/master_lists/generated/plows/

under "Upper Air: Radiosonde".

It appears there were three sources of soundings for this campaign, MISS, NWS, and Univ. of Mo. We should test any capability using all three sources, however the EOL Sounding Composite (ESC) format is well-defined and should be ubiquitous across datasets.

Some capability implemented in #635 should be useful here.