Feature/9 display level

[LeeHyunWoo02]

What

This PR adds the level Draw feature, which includes the following changes:

• The drawLevel method was used for GameScreen.
• We created an implementation class that inherits the DrawManage class and implemented the drawLevel messenger.

Why

We did it to add a function that allows users to check the game level at a glance.

Related Issue

Closes #9

How to Test

1. Start the application locally.

Screenshots

Additional Information

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