style(core): format shared player contracts

Author: nosam1998

crates/core/gfa-core/src/player.rs

@@ -104,7 +104,6 @@ pub trait Opponent: Send + Sync {
     ) -> Result<ActionChoice, GameError>;
 }
 
-
 fn invalid(message: &str) -> GameError {
     GameError::new(
         ErrorCode::InvalidConfig,

crates/players/gfa-opponents/src/lib.rs

@@ -8,8 +8,8 @@ pub use gfa_core::{ActionChoice, ChoiceInfo, Clock, Opponent, PlayerTurn, Search
 
 use gfa_core::serde_json::Value;
 use gfa_core::{
-    DynGame, ErrorCode, GameError, Information, LegalAction, PlayerId, SeededRng,
-    TurnStructure, Viewer,
+    DynGame, ErrorCode, GameError, Information, LegalAction, PlayerId, SeededRng, TurnStructure,
+    Viewer,
 };
 use std::{sync::Arc, time::Instant};