Partial on #2975 - Replaces Menu v1 in many places with v2 (#4040)

* touching publish.yml

* Fixed UICatalog bugs. Added fluent tests.

* marked v1 menu stuff as obsolte

* Tweaks.
Added View.GetSubMenus<type>().

* fixed unit tests

* general messing around

* general messing around

* Playing with Fluent

* ColorScheme tweaks

* WIP: ColorScheme tweaks

* Playing with Fluent

* Merged from laptop2

* Hacky-ish fixes to:
- #4016
- #4014

* Fixed Region bug preventing menus without borders from working

* Tweaks

* Fixed a bunch of CM issues

* Fixed OoptionSelector

* ip

* FixedCM issues

* Fixed CM issues2

* Revert "FixedCM issues"

This reverts commit dd6c6a70a3.

* Reverted stuff

* Found and fixed bug in AllViews_Center_Properly

* Fixed CM issues2

* removed menuv2 onapplied.
Changed how UICatalog Applys CM

* changed test time out to see if it helkps with ubuntu fails

* reset app on fail?

* back to 1500ms

* Made StatusBar nullable.

* Code Cleanup.

* HexEditor Code Cleanup.

* HexEditor Code Cleanup.

* Back to 3000ms. Sigh.

* Trying different logic

* Trying different logic2

* Fixed potential crash in runlop

* Fixed potential crash in runlop2

* Tweaked Spinner stuff

* Removed TabView from TextEffects scenario. Not needed and possible culprit.

* back to 2000ms

* WIP: Revamping menu scenarios

* Menu Scenario refinements.
Fixed a few bugs.
Code cleanup.

* fixed unit test

* Fixed warnings

* Fixed warnings2

* Fixed File.Exit

* WIP: Dealing with QuitKey struggles

* WIP: Dealing with QuitKey struggles 2

* WIP: Dealing with QuitKey struggles 3

* Fixed ListView collection nav bug

* Fixed a bunch of menu stuff.
Fixed Appv2 stuff.

* Lots of refactoring and fixing

* Lots of unit test issues

* Fixed DebugIDisposable issues

* Fixed release build issue

* Fixed release build issue 2

* DebugIDisposable -> EnableDebugIDisposableAsserts and more

* DebugIDisposable -> EnableDebugIDisposableAsserts and more 2

* Fixed Menus scenario - context menu

* Added @bdisp suggested assert. Commented it out as it breaks tests.

* Code cleanup

* Fixed disposed but

* Fixed UICatalog exit

* Fixed Unit test I broke.
Added 'Minimal' Theme that turns off all borders etc...

Tests/UnitTestsParallelizable/View/SubviewTests.cs

@@ -1,5 +1,6 @@
 namespace Terminal.Gui.ViewTests;
 
+[Collection ("Global Test Setup")]
 public class SubViewTests
 {
     [Fact]
@@ -591,4 +592,70 @@ public class SubViewTests
         Assert.NotEqual (superView, subView.SuperView);
         Assert.Empty (superView.SubViews);
     }
+
+    [Fact]
+    public void RemoveAll_Removes_All_SubViews ()
+    {
+        // Arrange
+        var superView = new View ();
+        var subView1 = new View ();
+        var subView2 = new View ();
+        var subView3 = new View ();
+
+        superView.Add (subView1, subView2, subView3);
+
+        // Act
+        var removedViews = superView.RemoveAll ();
+
+        // Assert
+        Assert.Empty (superView.SubViews);
+        Assert.Equal (3, removedViews.Count);
+        Assert.Contains (subView1, removedViews);
+        Assert.Contains (subView2, removedViews);
+        Assert.Contains (subView3, removedViews);
+    }
+
+    [Fact]
+    public void RemoveAllTView_Removes_All_SubViews_Of_Specific_Type ()
+    {
+        // Arrange
+        var superView = new View ();
+        var subView1 = new View ();
+        var subView2 = new View ();
+        var subView3 = new View ();
+        var subView4 = new Button ();
+
+        superView.Add (subView1, subView2, subView3, subView4);
+
+        // Act
+        var removedViews = superView.RemoveAll<Button> ();
+
+        // Assert
+        Assert.Equal (3, superView.SubViews.Count);
+        Assert.DoesNotContain (subView4, superView.SubViews);
+        Assert.Single (removedViews);
+        Assert.Contains (subView4, removedViews);
+    }
+
+    [Fact]
+    public void RemoveAllTView_Does_Not_Remove_Other_Types ()
+    {
+        // Arrange
+        var superView = new View ();
+        var subView1 = new View ();
+        var subView2 = new Button ();
+        var subView3 = new Label ();
+
+        superView.Add (subView1, subView2, subView3);
+
+        // Act
+        var removedViews = superView.RemoveAll<Button> ();
+
+        // Assert
+        Assert.Equal (2, superView.SubViews.Count);
+        Assert.Contains (subView1, superView.SubViews);
+        Assert.Contains (subView3, superView.SubViews);
+        Assert.Single (removedViews);
+        Assert.Contains (subView2, removedViews);
+    }
 }