Support link/html in analytics prompt strings.

Show the new prompt to everyone, even if they previously opted out.
Add docs to Analytics.

RiotSwiftUI/Modules/AnalyticsPrompt/MockAnalyticsPromptStrings.swift

@@ -0,0 +1,52 @@
+// 
+// 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
+
+struct MockAnalyticsPromptStrings: AnalyticsPromptStringsProtocol {
+    var appDisplayName = "Element"
+    
+    let point1: NSAttributedString
+    let point2: NSAttributedString
+    
+    let termsNewUser: NSAttributedString
+    let termsUpgrade: NSAttributedString
+    
+    let shortString = NSAttributedString(string: "This is a short string.")
+    let longString = NSAttributedString(string: "This is a very long string that will be used to test the layout over multiple lines of text to ensure everything is correct.")
+    
+    init() {
+        let point1 = NSMutableAttributedString(string: "We ")
+        point1.append(NSAttributedString(string: "don't", attributes: [.font: UIFont.boldSystemFont(ofSize: UIFont.systemFontSize)]))
+        point1.append(NSAttributedString(string: " record or profile any account data"))
+        self.point1 = point1
+        
+        let point2 = NSMutableAttributedString(string: "We ")
+        point2.append(NSAttributedString(string: "don't", attributes: [.font: UIFont.boldSystemFont(ofSize: UIFont.systemFontSize)]))
+        point2.append(NSAttributedString(string: " share information with third parties"))
+        self.point2 = point2
+        
+        let termsNewUser = NSMutableAttributedString(string: "You can read all our terms ")
+        termsNewUser.append(NSAttributedString(string: "here", attributes: [.analyticsPromptTermsTextLink: true]))
+        termsNewUser.append(NSAttributedString(string: "."))
+        self.termsNewUser = termsNewUser
+        
+        let termsUpgrade = NSMutableAttributedString(string: "Read all our terms ")
+        termsUpgrade.append(NSAttributedString(string: "here", attributes: [.analyticsPromptTermsTextLink: true]))
+        termsUpgrade.append(NSAttributedString(string: ". Is that OK?"))
+        self.termsUpgrade = termsUpgrade
+    }
+}