[Playground] Component: Page component #246 (#249)

Author: 5jisoo

src/AzureOpenAIProxy.PlaygroundApp/Components/Pages/Playground.razor

@@ -0,0 +1,5 @@
+@page "/playground"
+
+<PageTitle>Playground Page</PageTitle>
+
+<h1>playground page!</h1>

test/AzureOpenAIProxy.AppHost.Tests/PlaygroundApp/Components/Pages/PlaygroundPageTest.cs

@@ -0,0 +1,19 @@
+using AzureOpenAIProxy.AppHost.Tests.Fixtures;
+
+namespace AzureOpenAIProxy.AppHost.Tests.PlaygroundApp.Components.Pages;
+
+public class PlaygroundPageTest(AspireAppHostFixture host) : IClassFixture<AspireAppHostFixture>
+{
+    [Fact]
+    public async Task Given_Resource_When_Invoked_Endpoint_Then_It_Should_Return_OK()
+    {
+        // Arrange
+        var client = host.App!.CreateHttpClient("playgroundapp");
+
+        // Act
+        var response = await client.GetAsync("/playground");
+
+        // Assert
+        response.EnsureSuccessStatusCode(); // Status Code 200-299
+    }
+}