Update CONTRIBUTING.md with package generate info

CONTRIBUTING.md

@@ -22,6 +22,30 @@ a single module, you can specify that one specifically
 (ex. `localStorage.debug = 'flyte:adminEntity'` to only see decoded Flyte
 Admin API requests).
 
+## Generate new package
+
+To add a new package use a script
+
+```bash
+yarn generate:package
+```
+
+After new package is generated, you will need to update some values to be able to use it with other packages.
+For example in case if package plan to be used in `console` app
+
+Ensure to add proper webpack alias path resolutions into:
+* ./storybook/main.js -  as `'@flyteconsole/flyte-api': path.resolve(__dirname, '../packages/plugins/flyte-api/src’),`
+* packages/zapp/console/webpack.common.config.ts to alias section -  as `'@flyteconsole/flyte-api': path.resolve(__dirname, '../packages/plugins/flyte-api/src’),`
+
+To add child package usage to other package, in parent package ->
+* Add `{ "path": “../../${type}/${package-name}" }` to tsconfig.json
+* Add `{ "path": “../../${type}/${package-name}/tsconfig.build.json" }` to tsconfig.build.json (if exists)
+- Then you can import your changes as `import { getLoginUrl } from '@flyteconsole/flyte-api’;`
+
+> If you see `yarn lint` package not defined issues update `.\eslintrc.js` by adding your package to 
+    'import/core-modules': ['@clients/locale', '@clients/primitives', '@clients/theme'],
+
+
 ## Storybook
 
 This project has support for [Storybook](https://storybook.js.org/).