feat: support `notify_file_id` push notifications #651

Job	Run time
Set up Craft and install dependencies	6m 15s
Build and test classic client / Build nextcloud-client	25m 26s
Build and test File Provider client / Build nextcloud-client	30m 9s
Build and test classic client / Run tests	5m 25s
Build and test File Provider client / Run tests	4m 43s
	1h 11m 58s

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