Add support for command permissions to the framework

src/framework/commands/permissions.rs

@@ -0,0 +1,10 @@
+use std::fmt::Debug;
+
+use async_trait::async_trait;
+
+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>;
+}