add funding.json for op retro program#6353

Yash094 wants to merge 3 commits intothirdweb-dev:mainthirdweb-dev/js:mainfrom

Yash094:yash/add-op-retro-funding-fileYash094/thirdweb-js-monorepo:yash/add-op-retro-funding-fileCopy head branch name to clipboard