Add a custom rule to prevent colors from being hardcoded outside of theme (#288)

* Add a custom rule to prevent colors from being hardcoded in ESLint

* Refactor colors

* Create packages folder and fix colors

* Remove external dependency for css alphabetical order linting

* Fix install with yarn

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Co-authored-by: Charles Bochet <charles@twenty.com>

infra/dev/package-lock.json

@@ -0,0 +1,6 @@
+{
+  "name": "dev",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {}
+}