Readme: clean and add audits links

[filmakarov]

PR-Codex overview

This PR focuses on updating the README.md file by removing sections related to the Biconomy Champions League, adding instructions for manual package.json creation, and updating the audit reports section.

Detailed summary

• Removed sections about Biconomy Champions League, Champions Roster, Entering the League, and Documentation and Resources.
• Added instructions for manually creating a package.json file in the prep directory.
• Updated the audit reports table with new entries for Zenith and Pashov.

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[Copilot]

Copilot reviewed 1 out of 1 changed files in this pull request and generated 1 comment.

[Copilot]

[nitpick] Clarify the instructions regarding the location from which to run the manual package.json creation commands to ensure developers use the intended 'prep' directory.

Suggested change

	After doing `yarn install`, you can do:
	After doing `yarn install`, change to the `prep` directory and create the `package.json` file: