Added component to let the user choose a directory

app/MindWork AI Studio/Components/SelectDirectory.razor

@@ -0,0 +1,16 @@
+<MudStack Row="@true" Spacing="3" Class="mb-3" StretchItems="StretchItems.None" AlignItems="AlignItems.Center">
+    <MudTextField
+        T="string"
+        Text="@this.Directory"
+        Label="@this.Label"
+        ReadOnly="@true"
+        Adornment="Adornment.Start"
+        AdornmentIcon="@Icons.Material.Filled.Folder"
+        UserAttributes="@SPELLCHECK_ATTRIBUTES"
+        Variant="Variant.Outlined"
+    />
+    
+    <MudButton StartIcon="@Icons.Material.Filled.FolderOpen" Variant="Variant.Outlined" Color="Color.Primary" Disabled="this.Disabled" OnClick="@this.OpenDirectoryDialog">
+        Choose Directory
+    </MudButton>
+</MudStack>

app/MindWork AI Studio/Components/SelectDirectory.razor.cs

@@ -0,0 +1,60 @@
+using AIStudio.Settings;
+
+using Microsoft.AspNetCore.Components;
+
+namespace AIStudio.Components;
+
+public partial class SelectDirectory : ComponentBase
+{
+    [Parameter]
+    public string Directory { get; set; } = string.Empty;
+    
+    [Parameter]
+    public EventCallback<string> DirectoryChanged { get; set; }
+
+    [Parameter]
+    public bool Disabled { get; set; }
+
+    [Parameter]
+    public string Label { get; set; } = string.Empty;
+
+    [Parameter]
+    public string DirectoryDialogTitle { get; set; } = "Select Directory";
+    
+    [Inject]
+    private SettingsManager SettingsManager { get; init; } = null!;
+
+    [Inject]
+    public RustService RustService { get; set; } = null!;
+    
+    [Inject]
+    protected ILogger<SelectDirectory> Logger { get; init; } = null!;
+    
+    private static readonly Dictionary<string, object?> SPELLCHECK_ATTRIBUTES = new();
+    
+    #region Overrides of ComponentBase
+
+    protected override async Task OnInitializedAsync()
+    {
+        // Configure the spellchecking for the instance name input:
+        this.SettingsManager.InjectSpellchecking(SPELLCHECK_ATTRIBUTES);
+        await base.OnInitializedAsync();
+    }
+
+    #endregion
+
+    private void InternalDirectoryChanged(string directory)
+    {
+        this.Directory = directory;
+        this.DirectoryChanged.InvokeAsync(directory);
+    }
+
+    private async Task OpenDirectoryDialog()
+    {
+        var response = await this.RustService.SelectDirectory(this.DirectoryDialogTitle, string.IsNullOrWhiteSpace(this.Directory) ? null : this.Directory);
+        this.Logger.LogInformation($"The user selected the directory '{response.SelectedDirectory}'.");
+
+        if (!response.UserCancelled)
+            this.InternalDirectoryChanged(response.SelectedDirectory);
+    }
+}