GuestLog - GuestDocument fixes & improvements:

- Use GuestDocument Details page to see details.
- Added GuestDocument stays in details page.

Other minor changes:
- Updated validators to use ValueValidator base class.
- Changed Snackbar settings to show them better.
- Added Empty Debug page to test things. This page wont be updated in git, all test must be local-only.

src/Somnia.GuestLog/Components/Pages/DebugPages/Empty.razor

@@ -0,0 +1,15 @@
+@page "/debug/empty"
+
+
+@inject ILogger<Empty> logger;
+@inject ISnackbar Snackbar
+@inject IDialogService DialogService
+
+<PageTitle>DEBUG - Empty</PageTitle>
+
+<MudText Typo="Typo.h3" GutterBottom="true" Class="mt-2">Empty Page for Debug</MudText>
+
+
+@code {
+
+}