tests: add opcode contract tests (#273)

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

tests/solidity/suites/opcode/migrations/1_initial_migration.js

@@ -0,0 +1,5 @@
+const Migrations = artifacts.require("Migrations");
+
+module.exports = function(deployer) {
+  deployer.deploy(Migrations);
+};

tests/solidity/suites/opcode/migrations/2_opCodes_migration.js

@@ -0,0 +1,5 @@
+var OpCodes = artifacts.require("./OpCodes.sol");
+
+module.exports = function(deployer) {
+  deployer.deploy(OpCodes);
+};