Media uploading (#851)

* MediaUploadingPreprocessor - Prevent images without any GPS metadata from being changed

* Add support for sending images

* Add support for sending video, audio and file attachments

* Rename MediaPickerPreview to MediaUploadPreview

* Move media uploading to the MediaUploadPreviewScreen, add waiting indicators and error handling

* Add support for pasting and drag&dropping in media for upload

* Adopt new media picker source UI, remove developer flag

* Set minimum heights for timeline loadable images

* Fix invalid camera picker file names

* Fix flakey MediaUploadingPreprocessor image tests, improve gps metadata stripping

* UITests: Update existing screenshots and add new step for the room attachment picker

* Switch all github action runners to macos-13

* Cleanup enter key and paste message composer handlers

ElementX/Sources/Screens/MediaPickerScreen/PhotoLibraryPicker.swift

@@ -20,7 +20,12 @@ import SwiftUI
 enum PhotoLibraryPickerAction {
     case selectFile(URL)
     case cancel
-    case error(Error?)
+    case error(PhotoLibraryPickerError)
+}
+
+enum PhotoLibraryPickerError: Error {
+    case failedLoadingFileRepresentation(Error?)
+    case failedCopyingFile
 }
 
 struct PhotoLibraryPicker: UIViewControllerRepresentable {
@@ -63,7 +68,9 @@ struct PhotoLibraryPicker: UIViewControllerRepresentable {
             
             provider.loadFileRepresentation(forTypeIdentifier: "public.item") { [weak self] url, error in
                 guard let url else {
-                    self?.photoLibraryPicker.callback(.error(error))
+                    Task { @MainActor in
+                        self?.photoLibraryPicker.callback(.error(.failedLoadingFileRepresentation(error)))
+                    }
                     return
                 }
                 
@@ -76,7 +83,9 @@ struct PhotoLibraryPicker: UIViewControllerRepresentable {
                         self?.photoLibraryPicker.callback(.selectFile(newURL))
                     }
                 } catch {
-                    self?.photoLibraryPicker.callback(.error(error))
+                    Task { @MainActor in
+                        self?.photoLibraryPicker.callback(.error(.failedCopyingFile))
+                    }
                 }
             }
         }