refactor: replace console.* with logger in core lib files

Update loaders, handlers, and BotClient to use centralized logger:
- CommandLoader.ts and EventLoader.ts
- AutocompleteHandler.ts, CommandHandler.ts, ComponentInteractionHandler.ts
- BotClient.ts

Provides consistent formatting across all core library logging.

src/lib/handlers/ComponentInteractionHandler.ts

@@ -1,4 +1,5 @@
 import { ButtonInteraction, StringSelectMenuInteraction, ModalSubmitInteraction } from "discord.js";
+import { logger } from "@lib/logger";
 
 type ComponentInteraction = ButtonInteraction | StringSelectMenuInteraction | ModalSubmitInteraction;
 
@@ -19,7 +20,7 @@ export class ComponentInteractionHandler {
                     await handlerMethod(interaction);
                     return;
                 } else {
-                    console.error(`Handler method ${route.method} not found in module`);
+                    logger.error(`Handler method ${route.method} not found in module`);
                 }
             }
         }