Don't crash the app on startup if we can't preload the GeoFeed

AS1024.GeoFeed/GeoFeedBuilder/PreloadGeoFeed.cs

@@ -21,6 +21,17 @@ namespace AS1024.GeoFeed.GeoFeedBuilder
         }
 
         async Task IHostedService.StartAsync(CancellationToken cancellationToken)
+        {
+            try
+            {
+                await StartPreLoad();
+            } catch (Exception ex)
+            {
+                logger.LogWarning($"Failed to preload, exception settings below:\n{ex}");
+            }
+        }
+
+        private async Task StartPreLoad()
         {
             logger.LogInformation("Preloading GeoFeed data in memory...");
             List<Models.IPGeoFeed> feed = await provider.GetGeoFeedData();