docs: update CONTRIBUTING.md (#41)

* docs: update CONTRIBUTING.md

* docs: change section title

* fix: fix typo in CONTRIBUTING.md

packages/eslint-plugin/CONTRIBUTING.md

@@ -1,6 +1,72 @@
 # Contribute
 
-If you find a useful rule that you feel every project at BAM should use, feel free to open a PR.
+This plugin is a way to share the best programming experience via rules and configurations to be used in different projects.
+It is important to keep it up to date and to add new rules and configurations when needed.
+
+## Adding a rule from another plugin
+
+If you feel that a rule could be useful to all react-native new projects, you can add it to the plugin by following these steps:
+
+#### Open an issue to discuss the rule with the community:
+
+- Go to this link : [RFC for a new rule on eslint-plugin ⭐](https://github.com/bamlab/react-native-project-config/issues/new?assignees=&labels=%F0%9F%93%8F+eslint-plugin%2C%E2%AD%90+enhancement&projects=&template=RFC-NEW-RULE.yml&title=%5BRFC%5D%3A+plugin%3Arule-name)
+- Fill the template with any relevant information about the rule (why it is needed, how it works, shareable configs to add it to, etc.)
+- Submit the issue and share it with the community
+
+#### After the discussion, if the rule is approved, you can create a PR to add the rule to the plugin:
+
+- Create a new branch from `main` with the name `feat/plugin-rule-name`
+- Go to the corresponding shareable config file (for example `recommended.js`) and add the rule to the `rules` object:
+  ```js
+  // recommended.js
+  module.exports = {
+    ...
+    rules: {
+      ...
+      "plugin-name/rule-name": ["error", { ... }],
+    },
+  }
+  ```
+  > If you feel a new shareable config should be created for the rule, please refer to the [Creating new shareable configuration](#creating-new-shareable-configuration) section.
+- (Optional) If the plugin the rule is part of is not yet added as a dependency:
+  - add the plugin in the `plugins` array of the shareable config file:
+    ```js
+    // recommended.js
+    module.exports = {
+      ...
+      plugins: [
+        ...
+        "plugin-name",
+      ],
+    }
+    ```
+  - add the plugin to the `peerDependencies` of the `package.json` file:
+    ```json
+    // package.json
+    {
+      ...
+      "peerDependencies": {
+        ...
+        "plugin-name": "^version",
+      },
+    }
+    ```
+- In the description of the PR, add `Closes #<issue number>` to link the PR to the issue and close it automatically when the PR is merged
+
+#### (OPTIONAL) Feel free to add a breaking example of the rule in the `example-app/eslint-breaking-examples` directory:
+
+Here's an example:
+
+```tsx
+// break-react-eslint-rules.tsx
+
+// Save without formatting: [⌘ + K] > [S]
+
+// This should trigger one error breaking eslint-plugin-react:
+// react/jsx-no-undef
+
+export const MyComponent = () => <ThisIsAViewThatDoesntExist />;
+```
 
 ## Creating new rules