Make permissions checking and notification separate functions

src/framework/commands/permissions.rs

@@ -7,4 +7,8 @@ use crate::framework::commands::{CommandError, context::CommandContext};
 #[async_trait]
 pub trait Permission<S: Send + Sync + 'static>: Debug {
     async fn check(&self, ctx: &CommandContext<S>) -> Result<bool, CommandError>;
+    
+    async fn on_handle_denied(&self, _ctx: &CommandContext<S>) -> Result<(), CommandError> {
+        Ok(())
+    }
 }