Optionally exclude validator from build

🚀 Feature Request

Relevant Package [REQUIRED]

go-mod-core-contracts

Description [REQUIRED]

The validator dependency is adding ~2MB memory footprint for each service:

go-mod-core-contracts/common/validator.go

Lines 44 to 52 in eaba535

    
           func init() { 
        
           	val = validator.New() 
        
           	_ = val.RegisterValidation(dtoDurationTag, ValidateDuration) 
        
           	_ = val.RegisterValidation(dtoUuidTag, ValidateDtoUuid) 
        
           	_ = val.RegisterValidation(dtoNoneEmptyStringTag, ValidateDtoNoneEmptyString) 
        
           	_ = val.RegisterValidation(dtoValueType, ValidateValueType) 
        
           	_ = val.RegisterValidation(dtoRFC3986UnreservedCharTag, ValidateDtoRFC3986UnreservedChars) 
        
           	_ = val.RegisterValidation(dtoInterDatetimeTag, ValidateIntervalDatetime) 
        
           }

But not all of them are actually using it.

It would be nice to be able to build service without this dependency.

Describe the solution you'd like

A no_dto_validator build flag and corresponding no-op code for the factory seem ideal this would make it easy to produce lighter builds.

Describe alternatives you've considered

Have you considered any alternative solutions or workarounds?

fixed by #744

	func init() {
	val = validator.New()
	_ = val.RegisterValidation(dtoDurationTag, ValidateDuration)
	_ = val.RegisterValidation(dtoUuidTag, ValidateDtoUuid)
	_ = val.RegisterValidation(dtoNoneEmptyStringTag, ValidateDtoNoneEmptyString)
	_ = val.RegisterValidation(dtoValueType, ValidateValueType)
	_ = val.RegisterValidation(dtoRFC3986UnreservedCharTag, ValidateDtoRFC3986UnreservedChars)
	_ = val.RegisterValidation(dtoInterDatetimeTag, ValidateIntervalDatetime)
	}