Clean up deprecated APIs

[mickael-menu]

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[Copilot]

Pull Request Overview

This PR removes a variety of deprecated APIs throughout the codebase to streamline the interface and enforce the new async and migration patterns. Key changes include:

• Removal of deprecated properties, functions, and typealiases from Publication, Navigator, and LCP-related modules.
• Complete removal of unused files such as PublicationAsset.swift, FileAsset.swift, UserSettings.swift, and LCPAcquisition.swift.
• Replacement of synchronous APIs with asynchronous variants and updated usage patterns.

Reviewed Changes

Copilot reviewed 53 out of 53 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Sources/Shared/Publication/Link.swift	Removed deprecated property and copy methods to enforce the new API usage.
Sources/Shared/Publication/Asset/PublicationAsset.swift	Removed the deprecated PublicationAsset protocol and its dependencies.
Sources/Shared/Publication/Asset/FileAsset.swift	Removed the legacy file-based asset representation.
Sources/Shared/Logger/Logger.swift	Removed the deprecated logging function in favor of the updated log initializer.
Sources/Navigator/VisualNavigator.swift	Removed deprecated extensions and alias methods, promoting the async variants.
Sources/Navigator/TTS/TTSEngine.swift	Removed the synchronous speak API in favor of its async variant.
Sources/Navigator/TTS/AVTTSEngine.swift	Removed the legacy init with audio session configuration.
Sources/Navigator/PDF/PDFNavigatorViewController.swift	Removed deprecated PDF view customization method.
Sources/Navigator/Navigator.swift	Removed synchronous navigation methods to standardize async navigation.
Sources/Navigator/EditingAction.swift	Removed deprecated alias for defining actions.
Sources/Navigator/EPUB/UserSettings.swift	Removed the legacy user settings API to support the new Preferences API.
Sources/Navigator/EPUB/EPUBNavigatorViewModel.swift	Removed the deprecated convenience initializer in favor of the designated initializer.
Sources/Navigator/EPUB/EPUBNavigatorViewController.swift	Removed deprecated properties and functions related to user settings and evaluation APIs.
Sources/Navigator/CBZ/CBZNavigatorViewController.swift	Removed deprecated initializers and property aliases for CBZ publications.
Sources/Navigator/Audiobook/AudioNavigator.swift	Removed deprecated typealiases for audio navigation.
Sources/LCP/License/Model/Components/Link.swift	Removed deprecated URL expansion API, now using url() instead.
Sources/LCP/LCPService.swift	Removed an outdated initializer and related functions that conflict with the new migration guide.
Sources/LCP/LCPLicense.swift	Removed deprecated loan renewal and return APIs in favor of async variants.
Sources/LCP/LCPAcquisition.swift	Removed the entire legacy acquisition API file.
Sources/Adapters/GCDWebServer/GCDHTTPServer.swift	Removed the deprecated shared instance, encouraging users to create their own instances.