feat: initialize Kurdistan SDK - independent fork of Polkadot SDK

substrate/frame/revive/fixtures/erc20/erc20.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+
+contract MyToken is ERC20 {
+    constructor(uint256 total) ERC20("TestToken1", "TT1") {
+        // We mint `total` tokens to the creator of this contract, as
+        // a sort of genesis.
+        _mint(msg.sender, total);
+    }
+
+    function mint(uint256 amount) public {
+        _mint(msg.sender, amount);
+    }
+
+    function burn(uint256 amount) public {
+        _burn(msg.sender, amount);
+    }
+}

substrate/frame/revive/fixtures/erc20/expensive_erc20.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
+
+contract MyToken is ERC20 {
+    constructor(uint256 total) ERC20("TestToken1", "TT1") {
+        // We mint `total` tokens to the creator of this contract, as
+        // a sort of genesis.
+        _mint(msg.sender, total);
+    }
+
+    function transfer(address to, uint256 value) public override returns (bool) {
+        address owner = msg.sender;
+        _transfer(owner, to, value);
+        for (uint256 i = 0; i < 1000000; i++) {
+            keccak256(abi.encode(i));
+        }
+        return true;
+    }
+}