Merged RepositoryBuilder into RepositoryManager
Added conflict handling to RepositoryManager::addResourceMapping()
Improved conflict management in RepositoryManager::addResourceMapping()
Improved RepositoryManager::removeResourceMapping() to restore overridden files
Fixed RepositoryManager::removeResourceMapping() to correctly restore overridden mappings
Extracted conflict detection logic from RepositoryManager to ConflictDetector
Removed useless code
Extracted repository update logic from RepositoryManager to RepositoryUpdater