fix clippy and check it on ci (#18)

src/shooting.rs

@@ -151,11 +151,7 @@ fn enemy_hit(
             continue;
         }
 
-        let enemy_entity = query_npc
-            .contains(*e1)
-            .then(|| *e1)
-            .or_else(|| Some(*e2))
-            .unwrap();
+        let enemy_entity = if query_npc.contains(*e1) { *e1 } else { *e2 };
 
         commands.entity(enemy_entity).trigger(Hit { damage: 20 });
     }
@@ -199,11 +195,7 @@ fn shot_collision(
             continue;
         }
 
-        let shot_entity = query_shot
-            .contains(*e1)
-            .then(|| *e1)
-            .or_else(|| Some(*e2))
-            .unwrap();
+        let shot_entity = if query_shot.contains(*e1) { *e1 } else { *e2 };
 
         let shot_pos = query_shot.get(shot_entity).unwrap().1.translation;