refactor(general): commands into GroupCog

Migrated general commands (ping, uptime, botinfo, serverinfo, feedback) into a single GroupCog in cogs/general/__init__.py for better organization and maintainability. Converted individual command files to export command functions instead of Cogs. Updated bot.py to load the new general extension. Renamed help.py for consistency.

bot.py

@@ -90,7 +90,7 @@ class DiscordBot(commands.Bot):
                 if os.path.exists(init_file):
                     try:
                         await self.load_extension(f"cogs.{folder}")
-                        if folder != "fun":
+                        if folder not in ["fun", "general"]:
                             self.logger.info(f"Loaded extension '{folder}'")
                     except Exception as e:
                         exception = f"{type(e).__name__}: {e}"