Screen API refactoring about avalonia HOT 5 OPEN

Media query API can re-use the same new Screen API as well.

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cc @emmauss @kekekeks

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How would we identify a particular screen? By connector id?

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@kekekeks does it work as an answer? #15382 (comment)

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I think a user readable identifier would also be useful, even if it's only implemented on some platforms. EG if you can read EDID (should be possible on all desktops) you can get the manufacturer name, model number and serial number of the display. EDID however is not always the most reliable thing (EG it's very easy to spoof on Linux), but it makes it much easier to show/handle monitors with the same model number/display name. Even if the ports they are connected to changes.

But otherwise this change looks pretty good. There is probably also some other things that might be useful (EG colour depth, DPI, supported resolutions, etc), but they are fairly minor. SDL's display APIs can probably be used for some inspiration as SDL supports pretty much every platform ever created.

https://wiki.libsdl.org/wiki/index

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