Preserve ACL when copying a file/folder

[fcharlaix-opendsi]

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Is your feature request related to a problem? Please describe.
When copying a file or folder, all applied ACLs are lost.

Use case : A root folder named Project with a sub folder per project and "complex" ACLs at multiple levels

Project/
  PRJ-0123/
    Management/ (restricted to Management group)
      Invoices/
      RH/ (restricted to RH group)
    Tech/ (restricted to Tech group)
    ...
  Archives/
     ...

When a project is archived, all groups should keep their permissions it if needed, without letting everyone with access to Archives see restricted folders.

Describe the solution you'd like
On copy, ask the user if the new folder or file should preserve the current permissions (example from Passbolt) :

If a permission is not compatible (the new parent folder is more restrictive) it should be dropped.

Describe alternatives you've considered
Creating a script that exports the ACL from OCC and reapplies it after copying.

[provokateurin]

Makes sense, but is probably quite some effort to implement correctly. Like you mentioned the issue is that parent folders might apply different ACLs, so we can't just copy the rule for the file/folder that is copied.