Added util func for skymapper weather and query/store in db script

[fergusL]

added a util that will return a skymapper weather data dict of form,

{'Date': '2021-10-08',
 'Time': '01:53:00',
 'Raining': False,
 'Cloudy': True,
 'Humidity': False,
 'Windy': False,
 'Hailing': False,
 'Excessive_Light': True,
 'Internal_Rain_Sensor': False,
 'External_Rain_Sensor': False,
 'Relative_Humidity': '48',
 'Wind_Speed_Minimum': '3.60',
 'Wind_Speed_Average': '4.06',
 'Wind_Speed_Maximum': '4.20',
 'Sky_Minus_Ambient': '-32.00',
 'Wind_Speed': '10.40'}

and a script that can be run to add this data to weather db periodically

[fergusL]

• cleaned up functions that fetch aat/skymapper weather data
• added function/config for determining which sources to use and which parameters to base safety decisions on
• added generic script for logging alternate weather data
• updated huntsman.pocs.core to use alternate weather sources as specified in config (ie whether to use a source and what weather readings to use)
• updated testing config to ignore alt weather sources