Adding mainstreet TVL adapter. (DefiLlama#14084)

Author: 0xSpartan

projects/mainstreet/index.js

@@ -0,0 +1,9 @@
+module.exports = {
+  misrepresentedTokens: true,
+  sonic: { tvl }
+}
+
+async function tvl(api) {
+  const supply = await api.call({ abi: 'uint256:totalSupply', target: '0xc2896AA335BA18556c09d6155Fac7D76A4578c5A' })
+  api.addCGToken('sonic-bridged-usdc-e-sonic', supply / 1e18)
+}