modified some structs definitions to match with the corresponding interfaces (part II)

v0.3.4

fix: modified some structs definitions to match with the correspondin…

added NilServiceError

v0.3.3

minor: added NilServiceError

modified some structs definitions to match with the corresponding interfaces

v0.3.2

fix: modified some structs definitions to match with the correspondin…

removed the 'fields' field from the validations DefaultValidator struct

v0.3.1

refactor: removed the 'fields' field from the validations DefaultVali…

added mapper Generator, Validations Validator and validations Generator interfaces

v0.3.0

feat: added mapper Generator, Validations Validator and validations G…

Modified CheckValidations function return values from the Validator service implementation

refactor: Modified CheckValidations function return values

* Modified CheckValidations function return values from the Validator service implementation

Added validator service

v0.2.0

feat: Added validator service

Added Protobuf and JSON struct validator

feat: Added Protobuf and JSON struct validator

* Added Protobuf and JSON struct validator through reflection based on their tags
* Forked from 'github.com/pixel-plaza-dev/uru-databases-2-go-service-common'