Add initial React client setup with Tailwind CSS integration

Api/Program.cs

@@ -8,6 +8,15 @@ builder.Services.AddOpenApiDocument(config =>
 {
     config.Title = "NSwag Demo API";
 });
+builder.Services.AddCors(options =>
+{
+    options.AddDefaultPolicy(policy =>
+    {
+        policy.AllowAnyOrigin()
+              .AllowAnyHeader()
+              .AllowAnyMethod();
+    });
+});
 
 var app = builder.Build();
 
@@ -20,6 +29,7 @@ if (app.Environment.IsDevelopment())
 }
 
 app.UseHttpsRedirection();
+app.UseCors();
 
 var summaries = new[]
 {