Templates: Use Protocol suffix instead of Type for protocols.

Tools/Templates/buildable/ScreenTemplate/TemplateScreenCoordinatorProtocol.swift

@@ -0,0 +1,27 @@
+/*
+ Copyright 2021 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
+
+protocol TemplateScreenCoordinatorDelegate: AnyObject {
+    func templateScreenCoordinator(_ coordinator: TemplateScreenCoordinatorProtocol, didCompleteWithUserDisplayName userDisplayName: String?)
+    func templateScreenCoordinatorDidCancel(_ coordinator: TemplateScreenCoordinatorProtocol)
+}
+
+/// `TemplateScreenCoordinatorProtocol` is a protocol describing a Coordinator that handle xxxxxxx navigation flow.
+protocol TemplateScreenCoordinatorProtocol: Coordinator, Presentable {
+    var delegate: TemplateScreenCoordinatorDelegate? { get }
+}