Save and upload logs from bot run

[ErikBjare]

• Include logs in PR message (as <details>)
• Logs are stored in ~/.local/share/gptme/logs/<conversation name>/conversation.jsonl

[ErikBjare]

@gptme patch .github/workflows/bot.yml to implement this. Read the log from the .jsonl file. Each line has role and content keys.

When the log is written to the issue inside the <details>, it should be converted to f"{role}: {content}\n" for each line.

Don't try to commit the changes.

[ErikBjare]

@gptme now check if there's something left to do, apply patches if so

[ErikBjare]

Could now be easily implemented via: #235

Just run gptme -r -n '/export log.html' after the conversation to export.