feat: autohide improvements

- Adds new setting "Enable inactivity hide during battle" (default:
  true) which determines whether autohide should apply during battle
  (thanks @aurieh)
- Adds new setting "Chat channels considered for activity" which allows
  customizing which channels incoming messages must match to "bump" the
  inactivity timer
- Adds new per-tab setting "Unhide the chat window on activity" to
  configure whether it will be considered for "bumping" the inactivity
  timer when receiving messages that match the new channel filter. Note
  that the foreground tab is currently always considered.
- Extends autohide code to apply to poped-out tabs as well. Each popout
  window has its own inactivity timer, but focusing the main window will
  restore all popped out windows.

Co-authored-by: Auri <me@aurieh.me>

ChatTwo/Ui/Popout.cs

@@ -12,6 +12,9 @@ internal class Popout : Window
     private readonly Tab Tab;
     private readonly int Idx;
 
+    private long FrameTime; // set every frame
+    private long LastActivityTime = Environment.TickCount64;
+
     public Popout(ChatLogWindow chatLogWindow, Tab tab, int idx) : base($"{tab.Name}##popout")
     {
         ChatLogWindow = chatLogWindow;
@@ -34,7 +37,20 @@ internal class Popout : Window
 
     public override bool DrawConditions()
     {
-        return !ChatLogWindow.IsHidden;
+        FrameTime = Environment.TickCount64;
+        if (ChatLogWindow.IsHidden)
+            return false;
+
+        if (!Plugin.Config.HideWhenInactive || (!Plugin.Config.InactivityHideActiveDuringBattle && ChatLogWindow.InBattle) || !Tab.UnhideOnActivity)
+        {
+            LastActivityTime = FrameTime;
+            return true;
+        }
+
+        // Activity in the tab, this popout window, or the main chat log window.
+        var lastActivityTime = Math.Max(Tab.LastActivity, LastActivityTime);
+        lastActivityTime = Math.Max(lastActivityTime, ChatLogWindow.LastActivityTime);
+        return FrameTime - lastActivityTime <= 1000 * Plugin.Config.InactivityHideTimeout;
     }
 
     public override void PreDraw()
@@ -65,6 +81,9 @@ internal class Popout : Window
 
         var handler = ChatLogWindow.HandlerLender.Borrow();
         ChatLogWindow.DrawMessageLog(Tab, handler, ImGui.GetContentRegionAvail().Y, false);
+
+        if (ImGui.IsWindowHovered(ImGuiHoveredFlags.ChildWindows))
+            LastActivityTime = FrameTime;
     }
 
     public override void PostDraw()