Config is a simple library to make loading configuration json structs from file and environment consistent and easy. It
exposes two functions, LoadConfigurationFromFile and LoadConfigurationFromEnvironmentVariables.
Structs that can be loaded from these functions should have public members be marked with json:"fieldname" tags to specify custom
json names to load from. Environment variables should be marked with env:"ENV_VARIABLE" tags. By default, if there is no json tag,
the name of the member is used. If there is no env tag, then the member will not be affected by LoadConfigurationFromEnvironmentVariables.