* Add new SaveFilePickerWithResultAsync API to the base
* Add SaveFilePickerWithResultAsync stub impl
* Control Catalog SaveFilePickerWithResultAsync sample with XML and JSON types
* Make SaveFilePickerResult a struct
* Add managed picker implementation
* Make SaveFilePickerResult a readonly struct
* Windows implementation of SaveFilePickerWithResultAsync
* Test impl for dbus
* Reuse the file type object (FTO) so StorageFile consumer can match exactly the right FTO when receiving the SaveFilePicker's result.
* Add Gtk impl
* Avalonia.Native: surface selected save dialog filters
* macOS: report selected NSSavePanel filter
* Modify the conditional in case there's duplicate descriptions of FTO's in DBusSystemDialog.cs
* Instantiate FPFT as fallback
* Pass the mime/pattern to instantiated FPFT
* Update API diff
* Fix review comments
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Co-authored-by: Max Katz <maxkatz6@outlook.com>
Jumar Macato
2c540873ec