docs: append plans for cooldowns in ac to changelog

DisCatSharp.Docs/changelogs/v10/10_6_0.md

@@ -195,6 +195,10 @@ Plans are underway to revamp our approach to the Discord audit log API. The inte
 
 We are proposing a complete rewrite of DisCatSharp.CommandNext, a module essential for handling text commands in Discord bots. This project aims to elevate the module's overall effectiveness, performance, and ease of maintenance. Anticipated improvements include new features and optimizations that could simplify the creation and management of commands. Please note that these plans are in the initial stages and may evolve.
 
+### Cooldowns for DisCatSharp.ApplicationCommands (Planned)
+
+We are planning to add support for cooldowns in DisCatSharp.ApplicationCommands. This feature would allow developers to set cooldowns for commands, preventing users from spamming commands. While this feature is still in the planning phase, we will provide updates as development progresses.
+
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