Provide life time decoupled version

ecs/src/world.rs

@@ -181,6 +181,20 @@ impl World {
             .unwrap())
     }
 
+    pub fn entities_mut_unchecked<'a, const N: usize>(
+        &mut self,
+        entities: [Entity; N],
+    ) -> std::result::Result<[&'a mut EntityObject; N], EntityNotFoundError> {
+        Ok(unsafe { remove_life_time_mut(&mut self.entities) }
+            .get_disjoint_mut::<Entity, N>(entities.iter().collect::<Vec<_>>().try_into().unwrap())
+            .into_iter()
+            .enumerate()
+            .map(|(i, entity_opt)| entity_opt.ok_or(EntityNotFoundError::new(entities[i])))
+            .collect::<Result<Vec<_>, _>>()?
+            .try_into()
+            .unwrap())
+    }
+
     pub fn add_entity(&mut self, entity_object: EntityObject) -> Result<Entity> {
         let entity = entity_object.as_entity();
         self.entities_to_add.push(entity_object);