feat: 🧪 Initial skeleton

New test for testing erc20 interactions, explicitly set evmVersion to Shanghai, incrementing solc

test/contracts/src/ERC20Sample.sol

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+import "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol";
+import "@openzeppelin/contracts/access/Ownable.sol";
+
+contract ERC20Sample is ERC20, ERC20Burnable, Ownable {
+    constructor()
+        ERC20("SampleToken", "SAM")
+        Ownable()
+    {}
+
+    function greeter() public view returns (string memory) {
+        return "Hello, ERC20!";
+    }
+
+    function mint(address to, uint256 amount) public onlyOwner {
+        _mint(to, amount);
+    }
+
+}

test/package.json

@@ -21,6 +21,7 @@
     "@moonwall/cli": "^5.1.4",
     "@moonwall/util": "^5.1.4",
     "@openzeppelin/contracts": "4.9.6",
+    "@openzeppelin/contracts-upgradeable": "4.9.6",
     "@polkadot/api": "10.12.6",
     "@polkadot/api-augment": "10.12.6",
     "@polkadot/api-derive": "10.12.6",
@@ -46,7 +47,7 @@
     "randomness": "1.6.8",
     "rlp": "3.0.0",
     "semver": "7.6.0",
-    "solc": "0.8.21",
+    "solc": "0.8.24",
     "tsx": "4.7.2",
     "viem": "2.9.9",
     "vitest": "1.4.0",