CharacterMap: Add a ListView to sort glyphs by their Unicode block

Author: https://github.com/thankyouverycool
Commit: 6704bc0072
Pull-request: https://github.com/SerenityOS/serenity/pull/12504
Reviewed-by: https://github.com/trflynn89 ✅

Userland/Applications/CharacterMap/CharacterMapWindow.gml

@@ -29,25 +29,38 @@
         }
     }
 
-    @GUI::GlyphMapWidget {
-        name: "glyph_map"
-    }
+    @GUI::HorizontalSplitter {
 
-    @GUI::Widget {
-        shrink_to_fit: true
-        layout: @GUI::HorizontalBoxLayout {
-            spacing: 4
-            margins: [0, 2, 0, 2]
+        @GUI::Widget {
+            layout: @GUI::VerticalBoxLayout {
+            }
+
+            @GUI::GlyphMapWidget {
+                name: "glyph_map"
+            }
+
+            @GUI::Widget {
+                shrink_to_fit: true
+                layout: @GUI::HorizontalBoxLayout {
+                    spacing: 4
+                    margins: [0, 2, 0, 2]
+                }
+
+                @GUI::TextBox {
+                    name: "output_box"
+                }
+
+                @GUI::Button {
+                    name: "copy_output_button"
+                    icon: "/res/icons/16x16/edit-copy.png"
+                    fixed_width: 22
+                }
+            }
         }
 
-        @GUI::TextBox {
-            name: "output_box"
-        }
-
-        @GUI::Button {
-            name: "copy_output_button"
-            icon: "/res/icons/16x16/edit-copy.png"
-            fixed_width: 22
+        @GUI::ListView {
+            max_width: 175
+            name: "unicode_block_listview"
         }
     }