refactor: rename and modularize resources-get command

[SERDUN]

Description

This PR performs a major architectural refactor of the resource acquisition logic. The monolithic ConfiguratorGetResourcesCommand has been transformed into a clean Orchestrator, delegating specific responsibilities to specialized processors, services, and runners.

Key Changes:

• Renaming & Organization: Renamed ConfiguratorGetResourcesCommand to ResourcesGetCommand for better semantics. Moved the command and its dependencies into a dedicated modular directory: lib/src/commands/resources/.

• Logic Extraction (SOLID):

• ApplicationDataFetcher: Handles API interactions and initial data validation.

• ThemeConfigProcessor: Manages JSON configuration mapping and asset migration.

• AssetProcessor: Handles binary downloads (icons, splash screens).

• TranslationProcessor: Manages Localization logic.

• CertificateProcessor: Handles local filesystem operations for SSL certs.

• LocalConfigProcessor: Manages local build cache and environment file generation.

• ExternalGeneratorRunner: Orchestrates system make process execution.

• Performance & Stability:

• Replaced blocking synchronous I/O calls with non-blocking asynchronous alternatives.

• Improved process handling by properly awaiting stdout/stderr streams.

• Type Safety: Eliminated dynamic types in favor of explicit DTOs (SplashAssetDto, LaunchAssetsEnvelopeDto, etc.).

• Clean Code:

• Introduced ResourcesContext to encapsulate command state.

• Implemented CommandHelpFormatter for consistent CLI help output.

• Standardized import ordering and removed redundant comments.

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore