Add MUL: Multipool

[shizong888]

Please provide the following information for your token.

• Token Address (HAS to be checksummed): 0x9eF3da23C304d88F856F2928B0BE17D9F5d0752F
• Token Name (from contract): Multipool
• Token Decimals (from contract): 18
• Token Symbol (from contract): MUL
• Token Icon (e.g. link to png, e.g. 200x200px): https://i.imgur.com/L3scNRg.png
• Chain: Ethereum
• Official project link: https://multipool.finance
• CoinGecko/CoinMarketCap token page: https://www.coingecko.com/en/coins/multipool

[maxdesalle]

Done! https://github.com/sablier-labs/community-token-list/commit/8e1fea6d92f42121586b836cec243f2f95433741