Add next gen HTML parser feature flag

ElementX/Sources/Screens/Settings/DeveloperOptionsScreen/DeveloperOptionsScreenModels.swift

@@ -52,6 +52,8 @@ protocol DeveloperOptionsProtocol: AnyObject {
     var fuzzyRoomListSearchEnabled: Bool { get set }
     var lowPriorityFilterEnabled: Bool { get set }
     var knockingEnabled: Bool { get set }
+    
+    var nextGenHTMLParserEnabled: Bool { get set }
 }
 
 extension AppSettings: DeveloperOptionsProtocol { }

ElementX/Sources/Screens/Settings/DeveloperOptionsScreen/View/DeveloperOptionsScreen.swift

@@ -36,9 +36,14 @@ struct DeveloperOptionsScreen: View {
                 Toggle(isOn: $context.threadsEnabled) {
                     Text("Threads")
                 }
+
                 Toggle(isOn: $context.spacesEnabled) {
                     Text("Spaces")
                 }
+                
+                Toggle(isOn: $context.nextGenHTMLParserEnabled) {
+                    Text("Next gen HTML parsing")
+                }
             }
             
             Section("Room List") {