SFM progress (v2.2.0): Added new clipboard extension API and new list-detail extension view

Changes

- Added clipboard API for extensions;

- Added new list-detail extension view with the list on the left and the preview / info on the right;

- Improved extension view design and functionality (added "other actions" menu that allows extensions to define multiple secondary actions)

Extension repo:

https://github.com/sigma-hub/sfm-extension-clipboard"

The early preview build v2.2.0 with this and other upcoming changes is already available to Patreon supporters:

https://www.patreon.com/sigma_file_manager/posts/early-update-for-162067398

It will become generally available to everyone in a few days with v.2.2.0 update