feat: initialize project structure

vitest.config.ts

@@ -0,0 +1,15 @@
+import { defineConfig } from 'vitest/config'
+import dotenv from 'dotenv'
+
+dotenv.config()
+
+export default defineConfig({
+  test: {
+    globals: true,
+    include: [
+      'packages/**/*.test.ts',
+    ],
+    env: process.env,
+    testTimeout: Infinity,
+  },
+})