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>

apps/console/package.json

@@ -9,7 +9,7 @@
     "relay-compile": "npx relay-compiler",
     "relay": "npm run relay-clean && npm run relay-compile",
     "build": "tsc -b && vite build",
-    "lint": "eslint . --concurrency 4",
+    "lint": "eslint . --concurrency 4 --max-warnings 0",
     "check": "tsc --noEmit -p tsconfig.app.json",
     "preview": "vite preview"
   },