GO-3526 drag and drop files to collection add them to collection

[AnastasiaShemyakinskaya]

https://linear.app/anytype/issue/GO-3526/drag-and-drop-files-to-collection-add-them-to-collection

[github-actions[bot]]

New Coverage	48.2% of statements
Patch Coverage	100.0% of changed statements (19/19)

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^{Coverage provided by https://github.com/seriousben/go-patch-cover-action}