Fix two clippy errors.

1. item order in LogEntry.
2. Implement From<> instead of Into<>.

src/lib.rs

@@ -49,8 +49,8 @@ pub type Index = usize;
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
 struct LogEntry<Command> {
-    term: Term,
     index: Index,
+    term: Term,
     command: Command,
 }
 

src/persister.rs

@@ -48,9 +48,9 @@ impl<Command: DeserializeOwned> TryFrom<Bytes> for PersistedRaftState<Command> {
     }
 }
 
-impl<Command: Serialize> Into<Bytes> for PersistedRaftState<Command> {
-    fn into(self) -> Bytes {
-        bincode::serialize(&self)
+impl<Command: Serialize> From<PersistedRaftState<Command>> for Bytes {
+    fn from(value: PersistedRaftState<Command>) -> Bytes {
+        bincode::serialize(&value)
             .expect("Serialization should not fail")
             .into()
     }