FEAT #14565 TIME 2 WIP front rgs auth validate doc action

src/frontend/app/app.module.ts

src/frontend/app/document/document.component.ts

...ce/signature-method/signature-method-modal.component.html

...ce/signature-method/signature-method-modal.component.scss

...vice/signature-method/signature-method-modal.component.ts

.../app/service/signature-method/signature-method.service.ts

src/frontend/core/global.scss