install knip (#1530)

Author: lkostrowski

knip.json

@@ -0,0 +1,7 @@
+{
+  "$schema": "https://unpkg.com/knip@5/schema.json",
+  "ignore": [
+    "apps/**/generated/**",
+    "packages/**/generated/**"
+  ]
+}

package.json

@@ -17,7 +17,8 @@
     "lint:packages:fix": "sherif --fix",
     "prepare": "husky",
     "start": "turbo run start",
-    "test": "turbo run test"
+    "test": "turbo run test",
+    "knip": "knip"
   },
   "devDependencies": {
     "@changesets/cli": "^2.26.2",
@@ -42,11 +43,13 @@
     "eslint": "8.57.0",
     "eslint-config-saleor": "workspace:*",
     "husky": "9.1.4",
+    "knip": "5.27.2",
     "lint-staged": "^13.2.3",
     "next": "14.2.3",
     "prettier": "3.0.3",
     "sherif": "0.10.0",
-    "turbo": "1.12.4"
+    "turbo": "1.12.4",
+    "typescript": "5.5.4"
   },
   "engines": {
     "node": ">=18.17.0 <=20",