surf: Add FileDiff::path method

This allows to get the latest path of a `FileDiff`, directly from
`radicle_surf`

Signed-off-by: Sebastian Martinez <me@sebastinez.dev>

radicle-surf/src/diff.rs

@@ -17,7 +17,12 @@
 
 //! Types that represent diff(s) in a Git repo.
 
-use std::{borrow::Cow, ops::Range, path::PathBuf, string::FromUtf8Error};
+use std::{
+    borrow::Cow,
+    ops::Range,
+    path::{Path, PathBuf},
+    string::FromUtf8Error,
+};
 
 #[cfg(feature = "serde")]
 use serde::{ser, ser::SerializeStruct, Serialize, Serializer};
@@ -287,6 +292,18 @@ pub enum FileDiff {
     Copied(Copied),
 }
 
+impl FileDiff {
+    pub fn path(&self) -> &Path {
+        match self {
+            FileDiff::Added(x) => x.path.as_path(),
+            FileDiff::Deleted(x) => x.path.as_path(),
+            FileDiff::Modified(x) => x.path.as_path(),
+            FileDiff::Moved(x) => x.new_path.as_path(),
+            FileDiff::Copied(x) => x.new_path.as_path(),
+        }
+    }
+}
+
 #[cfg(feature = "serde")]
 impl Serialize for FileDiff {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>