Partially Addresses #2616. Support combining sequences that don't normalize (#2932)

* Fixes #2616. Support combining sequences that don't normalize

* Decouples Application from ConsoleDriver in TestHelpers

* Updates driver tests to match new arch

* Start on making all driver tests test all drivers

* Improves handling if combining marks.

* Fix unit tests fails.

* Fix unit tests fails.

* Handling combining mask.

* Tying to fix this unit test that sometimes fail.

* Add support for combining mask on NetDriver.

* Enable CombiningMarks as List<Rune>.

* Prevents combining marks on invalid runes default and space.

* Formatting for CI tests.

* Fix non-normalized combining mark to add 1 to Col.

* Reformatting for retest the CI.

* Forces non-normalized CMs to be ignored.

---------

Co-authored-by: Tig <tig@users.noreply.github.com>

UnitTests/Views/TreeViewTests.cs

@@ -858,19 +858,19 @@ namespace Terminal.Gui.ViewsTests {
 
 
 			// Normal drawing of the tree view
-			TestHelpers.AssertDriverContentsAre (
-@"├-normal
+			TestHelpers.AssertDriverContentsAre (@"
+├-normal
 │ ├─pink
 │ └─normal
 └─pink
 ", output);
 			// Should all be the same color
-			TestHelpers.AssertDriverColorsAre (
-@"00000000
+			TestHelpers.AssertDriverColorsAre (@"
+00000000
 00000000
 0000000000
 000000
-",
+", driver: Application.Driver,
 				new [] { tv.ColorScheme.Normal, pink });
 
 			var pinkScheme = new ColorScheme {
@@ -887,20 +887,20 @@ namespace Terminal.Gui.ViewsTests {
 			tv.Draw ();
 
 			// Same text
-			TestHelpers.AssertDriverContentsAre (
-@"├-normal
+			TestHelpers.AssertDriverContentsAre (@"
+├-normal
 │ ├─pink
 │ └─normal
 └─pink
 ", output);
 			// but now the item (only not lines) appear
 			// in pink when they are the word "pink"
-			TestHelpers.AssertDriverColorsAre (
-@"00000000
+			TestHelpers.AssertDriverColorsAre (@"
+00000000
 00001111
 0000000000
 001111
-",
+", driver: Application.Driver,
 				new [] { tv.ColorScheme.Normal, pink });
 		}