build: add biome formatter and linter

package.json

@@ -22,7 +22,10 @@
     "coverage": "bun test --coverage",
     "prepublishOnly": "bun run build",
     "release": "bash ./scripts/release.sh",
-    "setup": "bash ./scripts/setup.sh"
+    "setup": "bash ./scripts/setup.sh",
+    "lint": "biome check .",
+    "lint:fix": "biome check . --fix",
+    "format": "biome format . --write"
   },
   "dependencies": {
     "chalk": "^5.3.0",
@@ -30,6 +33,7 @@
     "commander": "^12.0.0"
   },
   "devDependencies": {
+    "@biomejs/biome": "^2.4.8",
     "@types/bun": "^1.3.10",
     "@types/node": "^25.5.0"
   },