Update template screen naming. (#824)

Update the script too.

Tools/Scripts/Templates/SimpleScreenExample/ElementX/TemplateScreenViewModel.swift

@@ -0,0 +1,47 @@
+//
+// 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 Combine
+import SwiftUI
+
+typealias TemplateScreenViewModelType = StateStoreViewModel<TemplateScreenViewState, TemplateScreenViewAction>
+
+class TemplateScreenViewModel: TemplateScreenViewModelType, TemplateScreenViewModelProtocol {
+    private var actionsSubject: PassthroughSubject<TemplateScreenViewModelAction, Never> = .init()
+    
+    var actions: AnyPublisher<TemplateScreenViewModelAction, Never> {
+        actionsSubject.eraseToAnyPublisher()
+    }
+
+    init(promptType: TemplateScreenPromptType, initialCount: Int = 0) {
+        super.init(initialViewState: TemplateScreenViewState(promptType: promptType, count: 0))
+    }
+    
+    // MARK: - Public
+    
+    override func process(viewAction: TemplateScreenViewAction) {
+        switch viewAction {
+        case .accept:
+            actionsSubject.send(.accept)
+        case .cancel:
+            actionsSubject.send(.cancel)
+        case .incrementCount:
+            state.count += 1
+        case .decrementCount:
+            state.count -= 1
+        }
+    }
+}