Automatically try reloading failed images on network changes (#3170)

* Add the networkMonitor to the NSE and delete the old MockMediaLoader

* Generate a MediaLoaderMock through AutoMockable and use it in the MediaProviderTests

* Implement an ImageProvider mechanism that automatically tries reloading images when connectivity is established again and use it for LoadableImages

* Merge the ImageProvider protocol back into the MediaProvider

* Address PR review comments

* Provide a default sdk client request configuration

* Address tasks not automatically cancelling themselves when views get deallocated

ElementX/Sources/Other/SwiftUI/Views/OverridableAvatarImage.swift

@@ -22,17 +22,17 @@ struct OverridableAvatarImage: View {
     private let name: String?
     private let contentID: String?
     private let avatarSize: AvatarSize
-    private let imageProvider: ImageProviderProtocol?
+    private let mediaProvider: MediaProviderProtocol?
     
     @ScaledMetric private var frameSize: CGFloat
     
-    init(overrideURL: URL?, url: URL?, name: String?, contentID: String?, avatarSize: AvatarSize, imageProvider: ImageProviderProtocol?) {
+    init(overrideURL: URL?, url: URL?, name: String?, contentID: String?, avatarSize: AvatarSize, mediaProvider: MediaProviderProtocol?) {
         self.overrideURL = overrideURL
         self.url = url
         self.name = name
         self.contentID = contentID
         self.avatarSize = avatarSize
-        self.imageProvider = imageProvider
+        self.mediaProvider = mediaProvider
         
         _frameSize = ScaledMetric(wrappedValue: avatarSize.value)
     }
@@ -53,7 +53,7 @@ struct OverridableAvatarImage: View {
                                 name: name,
                                 contentID: contentID,
                                 avatarSize: avatarSize,
-                                imageProvider: imageProvider)
+                                mediaProvider: mediaProvider)
         }
     }
 }