Added substitution date + default courses

BetterIServ.Backend/Controllers/UnitsController.cs

@@ -72,6 +72,9 @@ public class UnitsController : ControllerBase {
 
             data.Substitutions.Add(substitution);
         }
+        
+        var date = html.DocumentNode.SelectNodes("//body/center[1]")[0].ChildNodes[1];
+        data.Date = DateTime.Parse(date.InnerHtml.Split(" ")[0]);
 
         return data;
     }

BetterIServ.Backend/Entities/UnitsData.cs

@@ -1,6 +1,7 @@
 namespace BetterIServ.Backend.Entities; 
 
 public struct UnitsData {
+    public DateTime Date { get; set; }
     public IList<string> Notifications { get; set; }
     public IList<Substitution> Substitutions { get; set; }
 }

BetterIServ.Backend/Program.cs

@@ -1,3 +1,5 @@
+using PuppeteerSharp;
+
 var builder = WebApplication.CreateBuilder(args);
 
 // Add services to the container.
@@ -18,6 +20,8 @@ var app = builder.Build();
 
 // Configure the HTTP request pipeline.
 if (app.Environment.IsDevelopment()) {
+    await new BrowserFetcher().DownloadAsync(BrowserFetcher.DefaultChromiumRevision);
+    
     app.UseSwagger();
     app.UseSwaggerUI();
 }