Welcome Screen (#1259)

* the screen renders and changed the analytics checkmark to be more generic

* welcome screen

* transition

* tests... TODO

* changelog

* changed assets and added multilineTextAlignment

* better naming

* fix for missing after migration but has a weird presentaiton bug

* fix

* icon color

ElementX/Sources/Screens/WelcomeScreenScreen/WelcomeScreenScreenModels.swift

@@ -0,0 +1,35 @@
+//
+// 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
+
+enum WelcomeScreenScreenViewModelAction {
+    case dismiss
+}
+
+struct WelcomeScreenScreenViewState: BindableState {
+    let title = L10n.screenWelcomeTitle(InfoPlistReader.main.bundleDisplayName)
+    let subtitle = L10n.screenWelcomeSubtitle
+    let bullet1 = L10n.screenWelcomeBullet1
+    let bullet2 = L10n.screenWelcomeBullet2
+    let bullet3 = L10n.screenWelcomeBullet3
+    let buttonTitle = L10n.screenWelcomeButton
+}
+
+enum WelcomeScreenScreenViewAction {
+    case doneTapped
+    case appeared
+}