test: add setup

Author: posva

package.json

@@ -36,7 +36,7 @@
     "lint": "prettier -c --parser typescript \"{src,__tests__,e2e}/**/*.[jt]s?(x)\"",
     "lint:fix": "yarn run lint --write",
     "test:types": "tsc --build tsconfig.json",
-    "test:unit": "jest --coverage",
+    "test:unit": "vitest --coverage",
     "test": "echo TODO"
   },
   "keywords": [
@@ -62,6 +62,7 @@
     }
   },
   "devDependencies": {
+    "@vitest/coverage-c8": "^0.23.4",
     "@vue/runtime-core": "^3.2.40",
     "chalk": "^5.1.0",
     "conventional-changelog-cli": "^2.0.34",
@@ -75,6 +76,7 @@
     "semver": "^7.3.8",
     "typescript": "~4.8.4",
     "unbuild": "^0.8.11",
+    "vitest": "^0.23.4",
     "vue": "^3.0.0",
     "yorkie": "^2.0.0"
   },