Extract types into a separate module

src/utils/side.rs

@@ -1,22 +0,0 @@
-use std::fmt::Display;
-
-#[cfg(feature = "serde")]
-use serde::{Deserialize, Serialize};
-
-/// Pretty-printable flag to tell which conflicting edit (side)
-/// an operation is associated with.
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-#[derive(Debug, Clone, Copy, PartialEq, Eq)]
-pub enum Side {
-    Left,
-    Right,
-}
-
-impl Display for Side {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            Side::Left => write!(f, "Left"),
-            Side::Right => write!(f, "Right"),
-        }
-    }
-}