Hatch is Another Try at Configuration Helper
To use it define a config struct which satisfies the Hatchling interface,
then call hatch.NewWithConfig("application", "yaml", ".", "..", "...").Unmarshal(config)
Check the test to see how it can be used and what are all the supported tag fields.
Tag fields syntax
hatch:"required,default"
e.g.
hatch:"true" -> required field
hatch:",hello world" -> optional field, with default "hello world"
hatch:",string1,string2,string3" -> optional field, with default "string1,string2,string3"
mapstructure:"env_name"