added new chain (graphprotocol#1740)

* added new chain: unichain testnet

* Create fair-suns-pay.md

Author: alinobrasil

.changeset/fair-suns-pay.md

@@ -0,0 +1,5 @@
+---
+"@graphprotocol/graph-cli": minor
+---
+
+added new chain

packages/cli/src/command-helpers/abi.ts

@@ -336,6 +336,8 @@ const getEtherscanLikeAPIUrl = (network: string) => {
       return 'https://explorer.fusespark.io/api';
     case 'rootstock-testnet':
       return 'https://rootstock-testnet.blockscout.com/api';
+    case 'unichain-testnet':
+      return 'https://unichain-sepolia.blockscout.com/api';
     default:
       return `https://api-${network}.etherscan.io/api`;
   }
@@ -490,6 +492,8 @@ const getPublicRPCEndpoint = (network: string) => {
       return 'https://public-en.node.kaia.io';
     case 'kaia-testnet':
       return 'https://public-en.kairos.node.kaia.io';
+    case 'unichain-testnet':
+      return 'http://beta-u-Proxy-9QsHxlNJa4es-1179015898.us-east-2.elb.amazonaws.com:8545';
     default:
       throw new Error(`Unknown network: ${network}`);
   }