Added settings & settings manager

app/MindWork AI Studio/Settings/Data.cs

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+namespace AIStudio.Settings;
+
+public sealed class Data
+{
+    public Version Version { get; init; }
+
+    public List<Provider> Providers { get; init; } = new();
+}

app/MindWork AI Studio/Settings/Provider.cs

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+using AIStudio.Provider;
+
+namespace AIStudio.Settings;
+
+public readonly record struct Provider(string Id, string InstanceName, Providers UsedProvider);

app/MindWork AI Studio/Settings/ProviderDialog.razor

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+@using AIStudio.Provider
+@using MudBlazor
+
+<MudDialog>
+    <DialogContent>
+        <MudForm @ref="@this.form" @bind-IsValid="@this.dataIsValid" @bind-Errors="@this.dataIssues">
+            <MudTextField
+                T="string"
+                @bind-Text="@this.dataInstanceName"
+                Label="Instance Name"
+                Adornment="Adornment.Start"
+                AdornmentIcon="@Icons.Material.Filled.Lightbulb"
+                AdornmentColor="Color.Info"
+                Required="@true"
+                RequiredError="Please add an instance name."
+            />
+            
+            @* ReSharper disable once CSharpWarnings::CS8974 *@
+            <MudSelect @bind-Value="@this.dataProvider" Label="Provider" OpenIcon="@Icons.Material.Filled.AccountBalance" AdornmentColor="Color.Info" Adornment="Adornment.Start" Validation="@this.ValidatingProvider">
+                @foreach (Providers provider in Enum.GetValues(typeof(Providers)))
+                {
+                    <MudSelectItem Value="@provider">@provider</MudSelectItem>
+                }
+            </MudSelect>
+        </MudForm>
+
+        @if (this.dataIssues.Any())
+        {
+            <MudPaper Class="pa-2 mt-3">
+                <MudText Typo="Typo.h6">Issues</MudText>
+                <MudList Clickable="@true">
+                    @foreach (var issue in this.dataIssues)
+                    {
+                        <MudListItem Icon="@Icons.Material.Filled.Error" IconColor="Color.Error">
+                            @issue
+                        </MudListItem> 
+                    }
+                </MudList>
+            </MudPaper>
+        }
+    </DialogContent>
+    <DialogActions>
+        <MudButton OnClick="@this.Cancel">Cancel</MudButton>
+        <MudButton OnClick="@this.Add" Color="Color.Primary">Add</MudButton>
+    </DialogActions>
+</MudDialog>

app/MindWork AI Studio/Settings/ProviderDialog.razor.cs

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+using AIStudio.Provider;
+
+using Microsoft.AspNetCore.Components;
+
+using MudBlazor;
+
+namespace AIStudio.Settings;
+
+public partial class ProviderDialog : ComponentBase
+{
+    [CascadingParameter]
+    private MudDialogInstance MudDialog { get; set; } = null!;
+
+    private bool dataIsValid;
+    private string[] dataIssues = [];
+    private string dataInstanceName = string.Empty;
+    private Providers dataProvider = Providers.NONE;
+    
+    private MudForm form = null!;
+
+    private async Task Add()
+    {
+        await this.form.Validate();
+        if (!this.dataIsValid)
+            return;
+        
+        var addedProvider = new Provider
+        {
+            Id = Guid.NewGuid().ToString(),
+            InstanceName = this.dataInstanceName,
+            UsedProvider = this.dataProvider,
+        };
+        
+        this.MudDialog.Close(DialogResult.Ok(addedProvider));
+    }
+    
+    private string? ValidatingProvider(Providers provider)
+    {
+        if (provider == Providers.NONE)
+            return "Please select a provider.";
+        
+        return null;
+    }
+
+    private void Cancel() => this.MudDialog.Cancel();
+}

app/MindWork AI Studio/Settings/Version.cs

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+namespace AIStudio.Settings;
+
+public enum Version
+{
+    UNKNOWN,
+    V1,
+}