pr_3817.prdoc

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title: Parachain Runtime API Implementations into mod apis Refactoring

doc:
  - audience: Runtime Dev
    description: |
        This PR introduces a refactoring to the runtime API implementations within the parachain template project. The primary changes include enhancing the visibility of `RUNTIME_API_VERSIONS` to `pub` in `impl_runtime_apis.rs`, centralizing API implementations in a new `apis.rs` file, and streamlining `lib.rs`. These changes aim to improve project structure, maintainability, and readability.
        
        Key Changes:
        - `RUNTIME_API_VERSIONS` is now publicly accessible, enhancing module-wide visibility.
        - Introduction of `apis.rs` centralizes runtime API implementations, promoting a cleaner and more navigable project structure.
        - The main runtime library file, `lib.rs`, has been updated to reflect these structural changes, removing redundant API implementations and simplifying runtime configuration by pointing `VERSION` to the newly exposed `RUNTIME_API_VERSIONS` from `apis.rs`.
        
        Motivations:
        - **Improved Project Structure**: Centralizing API implementations offers a more organized and understandable project layout.
        - **Enhanced Readability**: The refactoring efforts aim to declutter `lib.rs`, facilitating easier comprehension for new contributors.

crates: 
  - name: sp-api-proc-macro
  - name: parachain-template-node
  - name: parachain-template-runtime