GuestLog - StayEntry detail view and improvements:

- Added detail view for StayEntries.
- Added button to delete StayEntries.
- Improve queries of StayEntries using a "query config" record.
- Enabled LazyLoading for all database relations. This will make easier to find cases where required relations aren't explicitly loaded.

src/Somnia.GuestLog/Components/Controls/ConfirmDeleteMsgBox.razor

@@ -0,0 +1,18 @@
+<MudMessageBox @ref="_msgBox" Title="@LanguageLocale.general_confirmTitle"
+               CancelText="@LanguageLocale.general_btnCancel">
+    <MessageContent>
+        @LanguageLocale.general_confirmDeleteMsg
+    </MessageContent>
+    <YesButton>
+        <MudButton Variant="Variant.Filled" Color="Color.Error" StartIcon="@Icons.Material.Filled.DeleteForever">
+            @LanguageLocale.general_btnDelete
+        </MudButton>
+    </YesButton>
+</MudMessageBox>
+
+@code {
+    public MudMessageBox MsgBox => _msgBox;
+
+    MudMessageBox _msgBox = null!;
+
+}