feat(developer): document hide-download WebDAV property

Co-authored-by: Ferdinand Thiessen <opensource@fthiessen.de>
Co-authored-by: Côme Chilliet <91878298+come-nc@users.noreply.github.com>
Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

Author: susnux

developer_manual/app_publishing_maintenance/app_upgrade_guide/upgrade_to_31.rst

@@ -2,11 +2,6 @@
 Upgrade to Nextcloud 31
 =======================
 
-General
--------
-
-- TBD
-
 Front-end changes
 -----------------
 
@@ -51,15 +46,6 @@ to check whether the current Files app instance is a public share or not, and if
         console.info('This is a public share with the sharing token: ', getSharingToken())
     }
 
-Added APIs
-^^^^^^^^^^
-
-Changed APIs
-^^^^^^^^^^^^
-
-Deprecated APIs
-^^^^^^^^^^^^^^^
-
 Removed APIs
 ^^^^^^^^^^^^
 
@@ -126,6 +112,7 @@ Added APIs
 - New interface ``OCP\Files\Storage\IConstructableStorage`` for storages that can be built by passing only an array to the constructor.
 - New service ``OCP\RichObjectStrings\IRichTextFormatter`` to format rich text into parsed plain text using its ``richToParsed`` method.
 - New magic query parameter ``forceLanguage`` to force a specific language for a web request (API or frontend). See :ref:`Forcing language for a given call<api-force-language>`.
+- The new WebDAV property ``nc:hide-download`` was added to indicate if download actions should be hidden for a shared file or folder.
 
 Changed APIs
 ^^^^^^^^^^^^

developer_manual/client_apis/WebDAV/basic.rst

@@ -215,6 +215,9 @@ Supported properties
 |                               |                                                 | | ``'external'`` = external storage                                                  |
 |                               |                                                 | | ``'external-session'`` = external storage                                          |
 +-------------------------------+-------------------------------------------------+--------------------------------------------------------------------------------------+
+| <nc:hide-download />          | For shares this indicate if any download action | ``true`` or ``false``                                                                |
+|                               | should be hidden from the user or not.          |                                                                                      |
++-------------------------------+-------------------------------------------------+--------------------------------------------------------------------------------------+
 | <nc:is-encrypted />           | Whether the folder is end-to-end encrypted.     | | ``0`` for ``false``                                                                |
 |                               |                                                 | | ``1`` for ``true``                                                                 |
 +-------------------------------+-------------------------------------------------+--------------------------------------------------------------------------------------+