feat: implement server logging functionality

- Added a logging service to manage server event logs including message edits, deletions, member joins/leaves, and moderation actions.
- Introduced commands to configure logging settings, including setting the log channel and enabling/disabling logging.
- Updated the README to document the new logging features and commands.
- Enhanced moderation commands to log actions taken on members.

README.md

@@ -13,6 +13,9 @@ It currently includes:
 - Twitch live notifications (per-guild `/config` setup)
 - Welcome messages, DMs, and default role assignment (per-guild `/config` setup)
 - Focused moderation tools (`/moderation purge|timeout|untimeout|kick|ban|unban|slowmode`)
+- Server logging system (edits/deletes/joins/leaves/roles/ban/kick/mod actions)
+
+When the bot is added to a new server for the first time, toggleable systems are defaulted to **disabled** and a setup DM is sent to the inviter (or server owner fallback) with enable instructions.
 
 ## Requirements
 
@@ -115,6 +118,10 @@ just down    # stop postgres
   - `/config setwelcomedm message:"..."` — DM welcome template (supports `{user}`, `{server}`)
   - `/config setwelcomegif url:<image-url>` — GIF/image used in welcome embed
   - `/config setdefaultrole role:@role` — Role automatically granted on join
+- **Logging** (**Manage Server**)
+  - `/config setlogchannel channel:#channel` — Set where logs are sent
+  - `/config enablelogging` — Enable event/moderation logs
+  - `/config disablelogging` — Disable event/moderation logs
 
 ## Notes