Add support for file window events on Wayland

[tymmesyde]

Add support for DroppedFile, HoveredFileCancelled and HoveredFile window events that were not supported on Wayland.

• Tested on all platforms changed
• Added an entry to the changelog module if knowledge of this change could be valuable to users
• Updated documentation to reflect any user-facing changes, including notes of platform-specific behavior
• Created or updated an example program if it would help users understand this functionality

[HookedBehemoth]

Is this still a draft PR?
I think this should merge into master, instead of the last tagged release.
Over there you can also push the x, y positions into the events.

I've tried this commit but leave doesn't seem to work.

[tymmesyde]

Is this still a draft PR? I think this should merge into master, instead of the last tagged release. Over there you can also push the x, y positions into the events.

I've tried this commit but leave doesn't seem to work.

It's not a draft PR, waiting for feedback on the code and if there are bugs to fix
Thank you, yes the HoveredFileCancelled event was not dispatched, it should be fixed now

[kchibisov]

There're plenty of PRs dealing with it already, and have everything in place to figure out the design.