Treat ESLint warnings as errors in all packages

Add --max-warnings 0 to every eslint lint script so that any warning
causes a non-zero exit code. This makes `make lint` and CI fail on
warnings, not just hard errors.

Signed-off-by: Sacha Al Himdani <sacha@getprobo.com>

packages/ui/package.json

@@ -6,7 +6,7 @@
   "sideEffects": false,
   "main": "src/index.ts",
   "scripts": {
-    "lint": "eslint . --concurrency 2",
+    "lint": "eslint . --concurrency 2 --max-warnings 0",
     "dev": "storybook dev -p 6006 --no-open",
     "check": "tsc --noEmit -p tsconfig.app.json",
     "icons": "bun run src/Atoms/Icons/generator.ts"