[REFACTORING] Attachment to src

composer.json

modules/attachments/Controllers/AttachmentsController.php

modules/attachments/Controllers/ReconciliationController.php

modules/attachments/Test/AttachmentsControllerTest.php

modules/attachments/attachments_content.php

modules/convert/Controllers/ProcessConvertController.php

modules/convert/Controllers/ProcessFulltextController.php

modules/convert/Controllers/ProcessThumbnailsController.php

modules/visa/Controllers/VisaController.php

modules/visa/class/class_modules_tools_Abstract.php

rest/index.php

src/app/attachment/controllers/AttachmentController.php

src/app/attachment/models/AttachmentModel.php

src/app/attachment/models/AttachmentModelAbstract.php

src/core/controllers/StoreController.php