add setters for S3Client and BatchBuilder in the connect function
make the upload and connect functions returns boolean

- make the push function return a true in the Cdn Class
- update the comment of getConfigurations in the CdnHelper class
- update the comment of getAssets in the Asset class

add main validator to hold the shared function between all validators,
and add a CdnFacadeValidator to hold the validation of the CdnFacade
class.

validate the asset() function doesn't have an empty $path

and make it extends validator

to become Vinelab\Cdn\Validators\Contracts\ProviderValidator

after renaming the validator class

class name is EmptyInputException

class.

The new dependency is the validator class

the test covers empty default provider

To be the same as the of the class being tested

To be the same as the of the class being tested

- write tests for the asset class
- make the parseAndFillConfiguration private
- change the asset properties to protected (since they all have getters)

This will fix the reading of the config file form the framework
not the package