FEAT #13998 TIME 3:30 new registeredMail category + update registeredMail

rest/index.php

...p/registeredMail/controllers/RegisteredMailController.php

src/app/resource/controllers/ResController.php

src/app/resource/models/ResModelAbstract.php

src/core/lang/lang-en.php

src/core/lang/lang-fr.php

src/core/lang/lang-nl.php

.../indexingModel/indexing-model-administration.component.ts

...ail/issuing-site/indexing/issuing-site-input.component.ts

...ntend/app/indexation/field-list/field-list.component.html

...rontend/app/indexation/field-list/field-list.component.ts

...app/indexation/indexing-form/indexing-form.component.html

...d/app/indexation/indexing-form/indexing-form.component.ts

src/frontend/app/process/process.component.html

src/frontend/app/process/process.component.ts

src/frontend/app/tag/indexing/tag-input.component.ts

src/lang/lang-en.json

src/lang/lang-fr.json