GetEnv is a helper function to read an environment or return a default value.

GetEnvAsBool is a helper to read an environment variable into a bool or return default value.

GetEnvAsInt is a helper function to read an environment variable into integer or return a default value.

GetEnvAsSlice is a helper to read an environment variable into a string slice or return default value.

IsStringIsValidSlice is a helper to check, if string is a valid slice to convert it into []string.