add tower-battle hackathon project

Author: aster-void

contents/projects/hackathon/tower-battle/index.md

@@ -0,0 +1,18 @@
+---
+title: Tower Battle
+date: 2025-02-24
+kind: hackathon
+status: stable
+image:
+  src: ./thumbnail.png
+description: "簡単なタワーディフェンスゲームです。自機も移動して攻撃すると言う特徴があります。"
+members:
+  - ykobayashi
+tags:
+  - TypeScript
+  - Svelte
+  - DaisyUI
+  - Cloudflare
+github: https://github.com/aster-void/tower-battle
+website: https://tower-d5g.pages.dev
+---