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>

tsconfig.app.json

@@ -0,0 +1,16 @@
+{
+  "extends": "@vue/tsconfig/tsconfig.dom.json",
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "types": ["vite/client"],
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["src/**/*.ts", "src/**/*.tsx", "src/**/*.vue"]
+}