GuestLog - StayEntry - Initial Implementation

- Added new entity "StayEntry" to log stays of guests.
- Added pages for StayEntry management (List and creation).
- New DataList for PaymentMethods.
- Other general changes and improvements.

src/Somnia.GuestLog/Infrastructure/GuestLogContext.cs

@@ -11,11 +11,13 @@ public partial class GuestLogContext : DbContext
     { }
 
     public DbSet<GuestDocument> GuestDocuments { get; set; }
+    public DbSet<StayEntry> StayEntries { get; set; }
 
     
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
         modelBuilder.ApplyConfiguration<GuestDocument>(new GuestDocumentEntityConfig());
+        modelBuilder.ApplyConfiguration<StayEntry>(new StayEntryEntityConfig());
 
         OnModelCreatingPartial(modelBuilder);
         base.OnModelCreating(modelBuilder);