Add AtomDerivedScope and deprecate AtomScope(inheriting:content:)

[ra1028]

Pull Request Type

• Bug fix
• New feature
• Refactoring
• Documentation update
• Chore

Description

AtomScope's APIs for adding observers/overrides while inheriting parent contexts have been deprecated and now it asserts internally.
So this PR aims to add a new view without observe/override functionality so that the interface doesn't confuse users, and the original AtomScope.init(inheriting:content:) has now been deprecated.

[Copilot]

Pull Request Overview

This pull request introduces the new AtomDerivedScope view to replace the deprecated observe/override functionality from AtomScope. The changes update the documentation with new usage examples and API listings to clarify how to explicitly derive the atom store from a parent view context.

• Added AtomDerivedScope documentation and example usage in README.md.
• Updated the API list in the Atoms documentation.
• Modified workaround instructions to reference AtomDerivedScope instead of AtomScope.

Reviewed Changes

Copilot reviewed 2 out of 5 changed files in this pull request and generated no comments.

File	Description
README.md	Added a dedicated section for AtomDerivedScope and replaced legacy AtomScope usage examples.
Sources/Atoms/Atoms.docc/Atoms.md	Updated the API reference list to include AtomDerivedScope.

Files not reviewed (3)

• Sources/Atoms/AtomDerivedScope.swift: Language not supported
• Sources/Atoms/AtomScope.swift: Language not supported
• Sources/Atoms/PropertyWrapper/ViewContext.swift: Language not supported

Comments suppressed due to low confidence (1)

README.md:1809

• [nitpick] The documentation references AtomViewContext while the examples use a context provided by @ViewContext. Consider aligning the terminology for clarity.

As a workaround, you can use `AtomDerivedScope` to explicitly inherit the atom store through `AtomViewContext` from the parent view.