feat: initialize ColorLine98 project with Vue 3 + Vite + TypeScript

- Scaffold Vue 3 + Vite + TypeScript project
- Add ESLint + Prettier configuration
- Create project structure: src/game/, src/components/, src/assets/
- Implement core game modules: Board, PathFinder (BFS), LineChecker
- Add README with project description and setup instructions

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/App.vue

@@ -0,0 +1,7 @@
+<script setup lang="ts">
+import HelloWorld from './components/HelloWorld.vue'
+</script>
+
+<template>
+  <HelloWorld />
+</template>