• Added tactical sprint

You can now perform tactical sprints by pressing the sprint key twice.

• Bug fix

1. Fixed an issue that could not be run on browsers that do not support Offscreen Canvas.
2. Fixed an issue where the sensitivity would change depending on the frame rate.
3. Fixed an issue where diagonal movement was not corrected and could be moved faster when moving with a stick.
4. Changed the score obtained when eating a piece of meat so that it will be a fixed value instead of random.
5. Fixed an issue where melee enemies wouldn't actively approach.