refactor: [M3-9214] - Introduce the (at)linode/shared package

[hkhalil-akamai]

Description 📝

Creates a new package @linode/shared and moves LinodeSelect as the first component.

This package will contain shared feature components, like LinodeSelect, RegionSelect and others that are not "pure" enough to go in @linode/ui.

Changes 🔄

• Create @linode/shared package
  • Update package.json, tsconfig and repo scripts
• Move LinodeSelect component to new package
• Move dependencies to @linode/utilities:
  • Linode factories
  • LinodeConfigInterface factory
  • NodeBalancers factories
• Update imports

How to test 🧪

This change should result in no user-facing changes. We can use our CI pipeline and end-to-end tests to verify this.

Code Review:

• Most changed files in the packages/manager directory are import changes. Sample a selection of these files and verify the format of the changed imports are as expected.
• packages/shared
  • Verify this package was set up correctly, using other shared packages like utilities or queries for reference. Check the package.json, lint configurations and tsconfig.json are set up as expected.

Manual Testing:

• Verify LinodeSelect works as expected across the app. (This component is used in, e.g., the Volume, Firewall and Image create flows).
• Verify LinodeSelect storybook story

Author Checklists

As an Author, to speed up the review process, I considered 🤔

👀 Doing a self review
❔ Our contribution guidelines
🤏 Splitting feature into small PRs
➕ Adding a changeset
🧪 Providing/improving test coverage
🔐 Removing all sensitive information from the code and PR description
🚩 Using a feature flag to protect the release
👣 Providing comprehensive reproduction steps
📑 Providing or updating our documentation
🕛 Scheduling a pair reviewing session
📱 Providing mobile support
♿ Providing accessibility support

• I have read and considered all applicable items listed above.

As an Author, before moving this PR from Draft to Open, I confirmed ✅

• All unit tests are passing
• TypeScript compilation succeeded without errors
• Code passes all linting rules

[github-actions]

Coverage Report: ❌
Base Coverage: 79.82%
Current Coverage: 79.8%

[linode-gh-bot]

Cloud Manager UI test results

🔺 2 failing tests on test run #8 ↗︎

❌ Failing	✅ Passing	↪️ Skipped	🕐 Duration
2 Failing	537 Passing	3 Skipped	113m 18s

Details

Failing Tests
	Spec	Test
❌	google-pay.spec.ts	Google Pay » adds google pay method
❌	google-pay.spec.ts	Google Pay » tests make payment flow - google pay

Troubleshooting

Use this command to re-run the failing tests:

pnpm cy:run -s "cypress/e2e/core/billing/google-pay.spec.ts"