LLM Plugin: Summarize Hacker News Threads with Ease

A new LLM plugin, `llm-hacker-news`, lets you easily summarize Hacker News conversation threads. Simply install the plugin and use the command `llm -f hn:ID 'your instruction'` (e.g., `llm -f hn:43615912 'summary with illustrative direct quotes'`) to get a summary of the thread with the specified ID (found in the thread's URL). Installation and local setup instructions are provided in the README.