Screenshot tests (#130)

* #9 Add snapshot testing library

* #9 Create script to boot test simulators

* #9 Create the UI test plan

* #9 Create shared schemes for test targets

* #9 Disable split view for UI tests

* #9 Fix fastlane dependencies

* #9 Add snapshot testing to the application

* #9 assert screenshots

* #9 fix swipe gestures on iPad

* #9 Fix accessing items in session verification screen

* #9 Workaround for flaky unit test

* #9 Specify scheme for alpha build

* #9 Add reference screenshots

* Update python script path and check assets for png check

* Update script path

* Use static timezone for simulator time

* Fix build after SwiftFormat

* Add changelog

* Upload failed screenshots artifact

* Always upload artifacts

* Update boot simulator script

* Update simulator overridden time

* Install pytz before tests

* Get time from Ruby script

* Disable SwiftUI animation when running UI tests

* Update screenshots after animation setting

* Include reference images in the artifact

* Update matching precision

* Update image matching precision & revert artifact content

* Include Xcode result in the artifact

* Update test output directory

* Disable gradient on splash screen for tests

* Tap next button explicitly

* Wait a bit before checking alert

* Wait 1 second

* Run SwiftFormat on project

* Ignore temporary screenshots

* Fix most of the PR remarks

* Fix conflicts

* Bump Python version to 3

* Update reference screenshots for authentication screens

* Update SwiftFormat

* Fix flakey session verification test.

* Update scheme.

Co-authored-by: Doug <douglase@element.io>

ElementX/Sources/Screens/RoomScreen/View/MessageComposer.swift

@@ -36,7 +36,7 @@ struct MessageComposer: View {
             .padding(.bottom, 6.0)
             .disabled(disabled)
             .opacity(disabled ? 0.5 : 1.0)
-            .animation(.default, value: disabled)
+            .animation(.elementDefault, value: disabled)
             .keyboardShortcut(.return, modifiers: [.command])
         }
     }

ElementX/Sources/Screens/RoomScreen/View/MessageComposerTextField.swift

@@ -57,7 +57,7 @@ struct MessageComposerTextField: View {
             .background(placeholderView, alignment: .topLeading)
             .clipShape(rect)
             .overlay(rect.stroke(borderColor, lineWidth: borderWidth))
-            .animation(.default, value: isEditing)
+            .animation(.elementDefault, value: isEditing)
     }
     
     @ViewBuilder

ElementX/Sources/Screens/RoomScreen/View/Timeline/ImageRoomTimelineView.swift

@@ -42,7 +42,7 @@ struct ImageRoomTimelineView: View {
                 }
             }
             .id(timelineItem.id)
-            .animation(.default, value: timelineItem.image)
+            .animation(.elementDefault, value: timelineItem.image)
             .frame(maxHeight: 1000.0)
         } else {
             TimelineStyler(timelineItem: timelineItem) {

ElementX/Sources/Screens/RoomScreen/View/TimelineItemList.swift

@@ -37,7 +37,7 @@ struct TimelineItemList: View {
                     Spacer()
                     ProgressView()
                         .opacity(context.viewState.isBackPaginating ? 1.0 : 0.0)
-                        .animation(.default, value: context.viewState.isBackPaginating)
+                        .animation(.elementDefault, value: context.viewState.isBackPaginating)
                     Spacer()
                 }
                 .listRowBackground(Color.clear)

ElementX/Sources/Screens/RoomScreen/View/TimelineSenderAvatarView.swift

@@ -40,6 +40,6 @@ struct TimelineSenderAvatarView: View {
                 .stroke(Color.element.background, lineWidth: 2)
         )
 
-        .animation(.default, value: timelineItem.senderAvatar)
+        .animation(.elementDefault, value: timelineItem.senderAvatar)
     }
 }

ElementX/Sources/Screens/RoomScreen/View/TimelineView.swift

@@ -47,7 +47,7 @@ struct TimelineView: View {
             scollToBottomButtonVisible = !visible
         })
         .opacity(scollToBottomButtonVisible ? 1.0 : 0.0)
-        .animation(.default, value: scollToBottomButtonVisible)
+        .animation(.elementDefault, value: scollToBottomButtonVisible)
     }
 }