Allow the mac app to chose room avatars directly from files instead of the photo library

ElementX/Sources/Screens/MediaPickerScreen/DocumentPicker.swift

@@ -7,6 +7,7 @@
 //
 
 import SwiftUI
+import UniformTypeIdentifiers
 
 enum DocumentPickerAction {
     case selectedMediaAtURLs([URL])
@@ -16,19 +17,22 @@ enum DocumentPickerAction {
 
 struct DocumentPicker: UIViewControllerRepresentable {
     private let selectionType: MediaPickerScreenSelectionType
+    private let contentTypes: [UTType]
     private let userIndicatorController: UserIndicatorControllerProtocol
     private let callback: (DocumentPickerAction) -> Void
     
     init(selectionType: MediaPickerScreenSelectionType,
+         contentTypes: [UTType],
          userIndicatorController: UserIndicatorControllerProtocol,
          callback: @escaping (DocumentPickerAction) -> Void) {
         self.selectionType = selectionType
+        self.contentTypes = contentTypes
         self.userIndicatorController = userIndicatorController
         self.callback = callback
     }
 
     func makeUIViewController(context: Context) -> UIDocumentPickerViewController {
-        let documentPicker = UIDocumentPickerViewController(forOpeningContentTypes: [.data])
+        let documentPicker = UIDocumentPickerViewController(forOpeningContentTypes: contentTypes)
         documentPicker.delegate = context.coordinator
         
         documentPicker.allowsMultipleSelection = switch selectionType {

ElementX/Sources/Screens/MediaPickerScreen/MediaPickerScreenCoordinator.swift

@@ -7,16 +7,17 @@
 //
 
 import SwiftUI
+import UniformTypeIdentifiers
 
 struct MediaPickerScreenMode: Hashable {
     let source: MediaPickerScreenSource
     let selectionType: MediaPickerScreenSelectionType
 }
 
-enum MediaPickerScreenSource {
+enum MediaPickerScreenSource: Hashable {
     case camera
     case photoLibrary
-    case documents
+    case documents(types: [UTType] = [.data])
 }
 
 enum MediaPickerScreenSelectionType {
@@ -79,10 +80,12 @@ class MediaPickerScreenCoordinator: CoordinatorProtocol {
                     self?.callback(.selectedMediaAtURLs(urls))
                 }
             }
-        case .documents:
+        case .documents(let types):
             // The document picker automatically dismisses everything on selection
             // Strongly retain self in the callback to forward actions correctly
-            DocumentPicker(selectionType: mode.selectionType, userIndicatorController: userIndicatorController) { action in
+            DocumentPicker(selectionType: mode.selectionType,
+                           contentTypes: types,
+                           userIndicatorController: userIndicatorController) { action in
                 switch action {
                 case .cancel:
                     self.callback(.cancel)