[All packages] Internal API changes & Cleanups

[smithki]

📦 Pull Request

Adds a few cleanups to our internal APIs:

• SDKBase.endpoint is now marked protected
• SDKBase.encodedQueryParams is renamed to SDKBase.parameters and is now marked protected
• ViewController.encodedQueryParams is renamed to ViewController.parameters
• PayloadTransport.encodedQueryParams is renamed to PayloadTransport.parameters
• ViewController takes just a PayloadTransport in its constructor; endpoint and parameters are inferred from the provided PayloadTransport
• Adds @magic-sdk/commons package to expose a listing of public APIs common across platform entry points (Web, CDN, and React Native)

Integrations should be unaffected by these changes, but due to several "public" APIs changing (i.e.: encodedQueryParams -> parameters), we'll mark this as a major semver bump.

🚨 Test instructions

yarn test

⚠️ Don't forget to add a semver label!

• patch: Bug Fix?
• minor: New Feature?
• major: Breaking Change?
• skip-release: It's unnecessary to publish this change.

[smithki]

🚀 PR was released in @magic-sdk/commons@1.0.0, @magic-sdk/provider@4.0.0, @magic-sdk/react-native@4.0.0, @magic-sdk/types@3.0.0, magic-sdk@4.0.0 🚀