Get endpoint for LOK open hours

api/Public/Endpoints/SystemEndpoints.cs

@@ -0,0 +1,31 @@
+using Microsoft.Data.Sqlite;
+
+public static class SystemEndpoints
+{
+  public static void MapSystemEndpoints(WebApplication app)
+  {
+    app.MapGet("/", () =>
+    {
+      return new
+      {
+        Version = "1.0.0"
+      };
+    })
+    .WithName("GetVersion");
+
+    app.MapGet("/health/db", async (SqliteConnection connection) =>
+    {
+      await connection.OpenAsync();
+      await using var command = connection.CreateCommand();
+      command.CommandText = "SELECT 1";
+      var result = await command.ExecuteScalarAsync();
+
+      return Results.Ok(new
+      {
+        Database = "ok",
+        Result = result
+      });
+    })
+    .WithName("GetDatabaseHealth");
+  }
+}