Add Symfony Flex recipes for the new AI bridge packages extracted from symfony/ai:
- symfony/ai-clock-tool: Provides time and clock-related functionality
- symfony/ai-scraper-tool: Enables web scraping with CSS selector support
- symfony/ai-wikipedia-tool: Provides Wikipedia search and article retrieval
- symfony/ai-youtube-transcriber-tool: Provides YouTube video transcription
These bridges were extracted from the core AI toolbox in symfony/ai#977.
