optimized packing slightly. restrict interactions

src/models/reminder/look_flags.rs

@@ -1,9 +1,11 @@
 use serde::{Deserialize, Serialize};
+use serde_repr::*;
 use serenity::model::id::ChannelId;
 
 use crate::consts::REGEX_CHANNEL;
 
-#[derive(Serialize, Deserialize, Copy, Clone, Debug)]
+#[derive(Serialize_repr, Deserialize_repr, Copy, Clone, Debug)]
+#[repr(u8)]
 pub enum TimeDisplayType {
     Absolute = 0,
     Relative = 1,