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/Screens/RoomDetailsScreen/View/RoomDetailsScreen.swift

@@ -74,7 +74,7 @@ struct RoomDetailsScreen: View {
     private var normalRoomHeaderSection: some View {
         AvatarHeaderView(room: context.viewState.details,
                          avatarSize: .room(on: .details),
-                         imageProvider: context.imageProvider) {
+                         mediaProvider: context.mediaProvider) {
             context.send(viewAction: .displayAvatar)
         } footer: {
             if !context.viewState.shortcuts.isEmpty {
@@ -87,7 +87,7 @@ struct RoomDetailsScreen: View {
     private func dmHeaderSection(accountOwner: RoomMemberDetails, recipient: RoomMemberDetails) -> some View {
         AvatarHeaderView(accountOwner: accountOwner,
                          dmRecipient: recipient,
-                         imageProvider: context.imageProvider) {
+                         mediaProvider: context.mediaProvider) {
             context.send(viewAction: .displayAvatar)
         } footer: {
             if !context.viewState.shortcuts.isEmpty {