ComparePasswords func for a comparing password.

ConnectionURLBuilder func for building URL connection.

GeneratePassword func for a making hash & salt with user password.

NewValidator func for create a new validator for model fields.

NormalizePassword func for a returning the users input as a byte slice.

StartServerWithGracefulShutdown function for starting server with a graceful shutdown.

ValidatorErrors func for show validation errors for each invalid fields.