fix: Add oxlint to root devDependencies for workspace resolution

Sample apps reference `npx oxlint` but oxlint was only installed in
packages/core. With yarn PnP, the binary isn't available to sibling
workspaces. Adding it to root devDependencies makes it available to
all workspaces.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: antonis

package.json

@@ -34,6 +34,7 @@
     "google-java-format": "^1.4.0",
     "lerna": "^8.1.8",
     "npm-run-all2": "^6.2.2",
+    "oxlint": "^1.56.0",
     "pmd-bin": "^2.5.0",
     "prettier": "^2.0.5",
     "react-native-version": "^4.0.0",

yarn.lock

@@ -29401,6 +29401,7 @@ __metadata:
     google-java-format: ^1.4.0
     lerna: ^8.1.8
     npm-run-all2: ^6.2.2
+    oxlint: ^1.56.0
     pmd-bin: ^2.5.0
     prettier: ^2.0.5
     react-native-version: ^4.0.0