feat(iOS): RN-77 Swift support (#8037)

[markdevocht]

Added Swift support for RN77.
When running pod install, a modulemap for the ReactNativeNavigation is now created with the ReactNativeNavigation-umbrella.h file. This will allow easy linking in Swift by just adding the following to the AppDelegate.swift file:
import ReactNativeNavigation

Also the 'rnn-link' script will now detect if we are dealing with an Objc or Swift project and automatically update the Swift file with the following changes:
import ReactNativeNavigation is added
class AppDelegate: RCTAppDelegate is converted to class AppDelegate: RNNAppDelegate.

[gosha212]

Fixes #8037.
Implement iOS part of rnn-link #7943

[gosha212]

Please fix the tests

[Copilot]

Pull Request Overview

This PR adds Swift support for RN-77 by creating a modulemap for ReactNativeNavigation and extending the rnn-link script to detect and update Swift AppDelegate files.

• Generates a modulemap during pod install so Swift users can import ReactNativeNavigation.
• Enhances rnn-link to detect AppDelegate.swift, insert the correct import, and change the base class.
• Updates ReactNativeNavigation.podspec to expose the new public header and enable module definition.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
autolink/postlink/path.js	Imported new log helpers and added logic to locate AppDelegate.swift
autolink/postlink/appDelegateLinker.js	Added Swift flow to modify AppDelegate.swift imports and base class
ReactNativeNavigation.podspec	Added RNNAppDelegate.h to public headers and set DEFINES_MODULE

Comments suppressed due to low confidence (5)

autolink/postlink/path.js:5

• [nitpick] The imported logging function names warnn, infon, and debugn use a non-standard suffix. Consider renaming them to warn, info, and debug for clarity and consistency.

var { warnn, infon, debugn } = require('./log');

ReactNativeNavigation.podspec:34

• Consider specifying s.swift_version (for example, s.swift_version = '5.0') in the podspec to ensure proper Swift compatibility when integrating this library.

"DEFINES_MODULE" => "YES"

autolink/postlink/appDelegateLinker.js:26

• debugn is called here but not imported or defined in this file, which will cause a runtime error. Ensure that debugn is imported from the logging module or otherwise defined.

debugn('Entering Swift flow ...');

autolink/postlink/appDelegateLinker.js:30

• [nitpick] This assignment is missing a semicolon at the end. For consistency with the project's JavaScript style, consider adding a semicolon.

    this.removeUnneededImportsSuccess = true

autolink/postlink/appDelegateLinker.js:31

• [nitpick] This assignment is missing a semicolon at the end. For consistency with the project's JavaScript style, consider adding a semicolon.

    this.removeApplicationLaunchContentSuccess = true

[gosha212]

Amazing!