Added chat templates (#474)

app/MindWork AI Studio/Components/ChatTemplateSelection.razor

@@ -0,0 +1,20 @@
+@using AIStudio.Settings
+@inherits MSGComponentBase
+
+<MudTooltip Placement="Placement.Top" Text="@T("Start a new chat with a chat template.")">
+    <MudMenu AnchorOrigin="Origin.TopLeft" TransformOrigin="@Origin.BottomLeft" Class="@this.MarginClass">
+        <ActivatorContent>
+            <MudButton IconSize="Size.Large" StartIcon="@Icons.Material.Filled.RateReview">
+                @(this.CurrentChatTemplate != ChatTemplate.NO_CHATTEMPLATE ? this.CurrentChatTemplate.Name : "")
+            </MudButton>
+        </ActivatorContent>
+        <ChildContent>
+            @foreach (var chatTemplate in this.SettingsManager.ConfigurationData.ChatTemplates.GetAllChatTemplates())
+            {
+                <MudMenuItem OnClick="() => this.SelectionChanged(chatTemplate)">
+                    @chatTemplate.Name
+                </MudMenuItem>
+            }
+        </ChildContent>
+    </MudMenu>
+</MudTooltip>