add diag warning icon

src/SharpIDE.Godot/Features/Problems/ProblemsPanel.cs

@@ -9,6 +9,11 @@ namespace SharpIDE.Godot.Features.Problems;
 
 public partial class ProblemsPanel : Control
 {
+    [Export]
+    public Texture2D WarningIcon { get; set; } = null!;
+    [Export]
+    public Texture2D ErrorIcon { get; set; } = null!;
+    
     public SharpIdeSolutionModel? Solution { get; set; }
     
 	private Tree _tree = null!;
@@ -75,6 +80,12 @@ public partial class ProblemsPanel : Control
         {
             var diagItem = tree.CreateItem(parent);
             diagItem.SetText(0, e.NewItem.Value.GetMessage());
+            diagItem.SetIcon(0, e.NewItem.Value.Severity switch
+            {
+                DiagnosticSeverity.Error => ErrorIcon,
+                DiagnosticSeverity.Warning => WarningIcon,
+                _ => null
+            });
             e.NewItem.View.Value = diagItem;
         });
     }

src/SharpIDE.Godot/Features/Problems/ProblemsPanel.tscn

@@ -1,6 +1,7 @@
-[gd_scene load_steps=2 format=3 uid="uid://tqpmww430cor"]
+[gd_scene load_steps=3 format=3 uid="uid://tqpmww430cor"]
 
 [ext_resource type="Script" uid="uid://b1r3no4u3khik" path="res://Features/Problems/ProblemsPanel.cs" id="1_bnenc"]
+[ext_resource type="Texture2D" uid="uid://pd3h5qfjn8pb" path="res://Features/Problems/Resources/Warning.svg" id="2_xj8le"]
 
 [node name="ProblemsPanel" type="Control"]
 layout_mode = 3
@@ -10,6 +11,8 @@ anchor_bottom = 1.0
 grow_horizontal = 2
 grow_vertical = 2
 script = ExtResource("1_bnenc")
+WarningIcon = ExtResource("2_xj8le")
+ErrorIcon = ExtResource("2_xj8le")
 
 [node name="ScrollContainer" type="ScrollContainer" parent="."]
 layout_mode = 1