Split out models, add some tests and fix some formatting.

RiotSwiftUI/Modules/Room/Composer/CreateActionList/Model/ComposerCreateActionListModels.swift

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+// 
+// 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
+
+@objc enum ComposerCreateAction: Int {
+    case photoLibrary
+    case stickers
+    case attachments
+    case polls
+    case location
+    case camera
+}
+
+extension ComposerCreateAction: Equatable, CaseIterable, Identifiable {
+    var id: Self { self }
+}
+
+extension ComposerCreateAction {
+    var title: String {
+        switch self {
+        case .photoLibrary:
+            return VectorL10n.wysiwygComposerStartActionMediaPicker
+        case .stickers:
+            return VectorL10n.wysiwygComposerStartActionStickers
+        case .attachments:
+            return VectorL10n.wysiwygComposerStartActionAttachments
+        case .polls:
+            return VectorL10n.wysiwygComposerStartActionPolls
+        case .location:
+            return VectorL10n.wysiwygComposerStartActionLocation
+        case .camera:
+            return VectorL10n.wysiwygComposerStartActionCamera
+        }
+    }
+    
+    var icon: String {
+        switch self {
+        case .photoLibrary:
+            return Asset.Images.actionMediaLibrary.name
+        case .stickers:
+            return Asset.Images.actionSticker.name
+        case .attachments:
+            return Asset.Images.actionFile.name
+        case .polls:
+            return Asset.Images.actionPoll.name
+        case .location:
+            return Asset.Images.actionLocation.name
+        case .camera:
+            return Asset.Images.actionCamera.name
+        }
+    }
+}
+
+struct ComposerCreateActionListViewState: BindableState {
+    let actions: [ComposerCreateAction]
+}
+
+enum ComposerCreateActionListViewModelResult: Equatable {
+    case done(ComposerCreateAction)
+}