[addToken] yCRV to MAINNET

[github-actions]

addToken

Note This is an automated PR

Submitted by @MarcoWorms

Closes #331

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Adding token yCRV on network MAINNET

Address: 0xfcc5c47be19d06bf83eb04298b026f81069ff65b

Link to block explorer ↗︎

Description	Image
Original
Optimized

Reason

this is the official Yearn yCRV token, taken from the docs: https://docs.yearn.fi/getting-started/products/ylockers/ycrv/overview

there are older yCRV tokens which can wreck users if they pick it, so we hope that by registering we improve the UX for users when searching yCRV in cowswap interface!

[github-actions]

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I have read the CLA Document and I hereby sign the CLA

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1 out of 2 committers have signed the CLA.
✅ @alfetopito
❌ @MarcoWorms
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