chore: deduplicate lock, update packages repository fields (#30044)

Summary:
This small PR includes the following changes:
* deduplicate yarn lock file using [`yarn-deduplicate`](https://github.com/atlassian/yarn-deduplicate) package
  * deduplicate script has been added as `update-lock`, let me know if you would like also to see this in [`postinstall`](https://docs.npmjs.com/misc/scripts) (to automatically optimize lock on every dependency change)
* according to the [npm docs](https://docs.npmjs.com/files/package.json#repository):
  * main `package.json` repository field has been replaced with shorthand
  * monorepo packages repository field has been extended by `directory`

The main goal of introducing deduplication script was to optimize the dependencies footprint while developing and speed up the initial installation process. Running `yarn-deduplicate` also increase the security in some way, because it enforces usage only of the latest version of the package. You can read more about the benefits in the deduplicate script [repository](https://github.com/atlassian/yarn-deduplicate#duplicated-packages).

## Changelog

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[Internal] [Added] - add yarn lock deduplication script

Pull Request resolved: https://github.com/facebook/react-native/pull/30044

Test Plan: `yarn install` was successful, this also should not affect yarn workspaces in any way.

Reviewed By: GijsWeterings

Differential Revision: D23959812

Pulled By: cpojer

fbshipit-source-id: e2455e3718378e1ce6206e79463d4083f8fe5d47