feat(core/application): app switch

[danielleroux]

💡 What is the current behavior?

• Closes Feature request: application header for basic navigation #165

🆕 What is the new behavior?

• deprecate basic-navigation and map-navigation
• Remove @internal from ix-application, ix-content, ix-application-header
• Add app switch feature to ix-application
• Create content area for ix-application-header
• Fix broken eslint in core, (fix major eslint incidents)

🏁 Checklist

A pull request can only be merged if all of these conditions are met (where applicable):

• 🦮 Accessibility (a11y) features were implemented
• 🗺️ Internationalization (i18n) - no hard coded strings
• 📲 Responsiveness - components handle viewport changes and content overflow gracefully
• 📄 Documentation was reviewed/updated (yarn docs)
• 🧪 Unit tests were added/updated and pass (yarn test)
• 📸 Visual regression tests were added/updated and pass (yarn visual-regression)
• 🧐 Static code analysis passes (yarn lint)
• 🏗️ Successful compilation (yarn build, changes pushed)

👨‍💻 Help & support