Video playback (#308)

* Create media player screen

* Introduce `FileCache` to cache message attachments

* Add file loading functionality into the media provider

* Process tap action on timeline items

* Pass item taps to view model

* Navigate to media player on view model callback

* Commit project file

* Add changelog

* Rename media to video

* Add a loader when large videos being processed

* Add back button explicitly on video screen, fixes for light scheme

* Handle right swipe to dismiss video

ElementX/Sources/Other/Extensions/Swipe.swift

@@ -0,0 +1,34 @@
+//
+// Copyright 2022 New Vector Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+import Foundation
+import SwiftUI
+
+extension View {
+    func onSwipeGesture(minimumDistance: CGFloat,
+                        up: @escaping (() -> Void) = { },
+                        down: @escaping (() -> Void) = { },
+                        left: @escaping (() -> Void) = { },
+                        right: @escaping (() -> Void) = { }) -> some View {
+        gesture(DragGesture(minimumDistance: minimumDistance, coordinateSpace: .local)
+            .onEnded { value in
+                if value.translation.width < 0 { left() }
+                if value.translation.width > 0 { right() }
+                if value.translation.height < 0 { up() }
+                if value.translation.height > 0 { down() }
+            })
+    }
+}