Add mainnet networks (#41)

Author: ali-behjati

pyth-evm-js/src/index.ts

@@ -18,4 +18,8 @@ export const CONTRACT_ADDR: Record<string, string> = {
   goerli: "0xff1a0f4744e8582DF1aE09D5611b887B6a12925C",
   mumbai: "0xff1a0f4744e8582DF1aE09D5611b887B6a12925C",
   aurora_testnet: "0x4305FB66699C3B2702D4d05CF36551390A4c69C6",
+  bnb: "0x4D7E825f80bDf85e913E0DD2A2D54927e9dE1594",
+  avalanche: "0x4305FB66699C3B2702D4d05CF36551390A4c69C6",
+  fantom: "0xff1a0f4744e8582DF1aE09D5611b887B6a12925C",
+  polygon: "0xff1a0f4744e8582DF1aE09D5611b887B6a12925C",
 };