Added flusher balance resolver

contracts/flusher/balances.sol

@@ -0,0 +1,49 @@
+pragma solidity ^0.6.0;
+pragma experimental ABIEncoderV2;
+
+interface TokenInterface {
+    function balanceOf(address) external view returns (uint);
+}
+
+
+contract Resolver {
+    struct Balances {
+        address flusher;
+        uint[] balance;
+        bool isDeployed;
+    }
+
+    function getBalances(address[] memory flushers, address[] memory tknAddress) public view returns (Balances[] memory) {
+        Balances[] memory tokensBal = new Balances[](flushers.length);
+        for (uint i = 0; i < flushers.length; i++) {
+            uint[] memory bals = new uint[](tknAddress.length);
+            for (uint j = 0; j < tknAddress.length; j++) {
+                if (tknAddress[j] == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {
+                    bals[j] = flushers[i].balance;
+                } else {
+                    TokenInterface token = TokenInterface(tknAddress[j]);
+                    bals[j] = token.balanceOf(flushers[i]);
+                }
+            }
+            tokensBal[i] = Balances({
+                flusher: flushers[i],
+                balance: bals,
+                isDeployed: isContractDeployed(flushers[i]);
+            });
+        }
+        return tokensBal;
+    }
+
+    function isContractDeployed(address flusher) public view returns (bool) {
+        uint32 size;
+        assembly {
+        size := extcodesize(flusher)
+        }
+        return (size > 0);
+    }
+}
+
+
+contract InstaFlusherERC20Resolver is Resolver {
+    string public constant name = "ERC20-Flusher-Resolver-v1";
+}