add other chains on metronome synth usd adapter

Author: uwezukwechibuzor

src/adapters/peggedAssets/metronome-synth-usd/index.ts

@@ -2,6 +2,15 @@ const chainContracts = {
     ethereum: {
         issued: ["0xab5eb14c09d416f0ac63661e57edb7aecdb9befa"]
     },
+    optimism: {
+        issued : "0x9dabae7274d28a45f0b65bf8ed201a5731492ca0",
+    },
+    base: {
+        issued: ["0x526728dbc96689597f85ae4cd716d4f7fccbae9d"],
+      },
+    plasma: {
+        issued: ["0x29ad7fe4516909b9e498b5a65339e54791293234"],
+      },
 };
 
 import { addChainExports } from "../helper/getSupply";