AppName - returns the app name.

AppPort - returns application http port.

JWTExpiryDurationHours - returns duration for jwt expiry in int.

JWTKey - returns the JSON Web Token key.

Load - loads all the environment variables and/or params in application.yml.

ReadEnvBool - reads environment variable as a boolean.

ReadEnvInt - reads an environment variable as an integer.

ReadEnvString - reads an environment variable as a string.