separate interactions and handler

src/commands/general.rs

@@ -0,0 +1,12 @@
+use serenity::prelude::*;
+use serenity::model::prelude::*;
+use serenity::framework::standard::{
+    CommandResult,
+    macros::command
+};
+
+#[command]
+pub async fn ping(ctx: &Context, msg: &Message) -> CommandResult {
+    msg.reply(ctx, "Pong!").await?;
+    Ok(())
+}

src/commands/mod.rs

@@ -0,0 +1 @@
+pub mod general;