feat: add conversation summarizer prompt

[DaniyalFaraz2003]

Add New Prompt (Conversation Summarizer)

Added a conversation history summarizer prompt. The intuition behind the prompt is that sometimes I am working on cursor or chatgpt and for some reason they lose context and the next day when I resume the work I have to sometimes explain the whole work to the AI again which takes time and effort. So I realized that if we make it generate a summary of the work we did today at the end of the day and then the next day feed that summary to the AI. Then it will pick up from where it left off. I tried this and now I do this every day as it seems to work perfectly!

• I've confirmed the prompt works well
• I've added
  Contributed by: [@yourusername](https://github.com/yourusername)
• I've added to the README.md
• I've added to the prompts.csv
  • Escaped quotes by double-quoting them
  • No spaces after commas after double quotes. e.g. "Hello","hi", not
    "Hello", "hi"
  • Removed "Act as" from the title on CSV

Please make sure you've completed all the checklist -> I have completed all the points in the checklist