fix: better logging

- verbose logging for log channel resolving logic
- don't LOG TOKENS TO THE CONSOLE OR SEQ
- actually log verbose logs to seq
- report open db connections to prometheus

Catalogger.Backend/CataloggerMetrics.cs

@@ -29,6 +29,11 @@ public static class CataloggerMetrics
 
     public static long MessageRateMinute { get; set; }
 
+    public static readonly Gauge DatabaseConnections = Metrics.CreateGauge(
+        "catalogger_open_database_connections",
+        "Number of open database connections"
+    );
+
     public static readonly Gauge GuildsCached = Metrics.CreateGauge(
         "catalogger_cache_guilds",
         "Number of guilds in the cache"