openai -> coderabbit

[harjotgill]

Summary by CodeRabbit

Refactor:

• Updated all references from openai to coderabbit in URLs, file paths, and conversation prompts.
• Renamed the GitHub PR Reviewer and Summarizer tool to "AI-based PR Reviewer & Summarizer with Chat Capabilities".
• Changed the branding icon and updated the author information.
• Introduced new tags for in-progress status and added functions to handle these statuses.
• Modified the bot mention used in the codebase from '@openai' to '@coderabbitai'.
• Updated summary messages to indicate they are generated by CodeRabbit instead of OpenAI.

🎉 Here's to a new dawn, a fresh start, 🌅
With CodeRabbit hopping, playing its part. 🐇
No longer OpenAI, but still just as smart, 🧠
We've refactored, rebranded, given it a new heart. ❤️
So let's celebrate this change, this brand-new chart! 🥳🎈

[github-actions[bot]]

CodeRabbit

High-level Summary

The changes primarily involve rebranding and renaming references from openai to coderabbit. This includes updates in URLs, file paths, conversation prompts, and PR reviewer names. Additionally, new features for handling in-progress status are introduced, and the ignore keyword is updated. The external interface of the code is altered by changing the bot mention used throughout the codebase.

Files	Summary
README.md, action.yml	References to openai are replaced with coderabbit. The GitHub Action's name, description, branding icon, and author are updated. The system message now reflects that the AI model is called @coderabbitai.
src/commenter.ts, src/review.ts, src/review-comment.ts	Changes include updating comment tags, introducing new tags for in-progress status, and modifying the ignore keyword. A new variable existingSummarizeCmtBody is added. The summary message is updated to indicate it's generated by CodeRabbit. The bot mention used in the codebase is changed from '@openai' to '@coderabbitai'.

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Notes

### Chat with CodeRabbit Bot (`@coderabbitai`) - Reply on review comments left by this bot to ask follow-up questions. A review comment is a comment on a diff or a file. - Invite the bot into a review comment chain by tagging `@coderabbitai` in a reply. ### Code suggestions - The bot may make code suggestions, but please review them carefully before committing since the line number ranges may be misaligned. - You can edit the comment made by the bot and manually tweak the suggestion if it is slightly off. ### Ignoring further reviews - Type `@coderabbitai: ignore` anywhere in the PR description to ignore further reviews from the bot.

Files not reviewed due to simple changes (1)

### Skipped review in the recent run * action.yml