Updated structure: Added Conference Culture section and moved content

[Prateekshit73]

Related Issue: #38

Summary: This pull request introduces significant updates to the structure of the DISCOVER Cookbook, specifically focusing on enhancing the content related to diversity and inclusion in conference organization. The following changes have been made:

1. New Section: Conference Culture:

   • Created a new section titled "Conference Culture" that emphasizes the importance of building an inclusive organizing committee.
   • Included best practices for recruiting a diverse organizing committee, avoiding cronyism, and ensuring representation across various dimensions (e.g., gender, race, expertise).

2. Content Reorganization:

   • Moved relevant content regarding inclusive practices during check-in to the new "Conference Culture" section.
   • Added a subsection on asking questions during talks, providing guidelines for fostering an inclusive Q&A environment.

3. Renaming Sections:

   • Renamed the "Event Registration" section to "Website & Registration" to better reflect its content.

4. New Content on Accessibility:

   • Added a comprehensive section on creating an accessible conference website, outlining best practices and resources to ensure that all participants can engage fully with the event.

[aterrel]

@Prateekshit73 thank you for the pull request. We are still in the process of determining how to accept new content like this. Our next meeting is mid Feb so it will be a few more weeks before we can let you know of any updates.