feat: initialize Kurdistan SDK - independent fork of Polkadot SDK

substrate/frame/revive/fixtures/contracts/Counter.sol

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.4;
+contract Counter {
+    uint256 public number;
+
+    constructor() {
+        number = 3;
+    }
+
+    function setNumber(uint256 newNumber) public returns (uint256) {
+        number = newNumber;
+    }
+
+    function increment() public {
+        number++;
+    }
+}
+
+contract NestedCounter {
+    Counter public counter;
+    uint256 public number;
+
+
+    constructor() {
+        counter = new Counter();
+        counter.setNumber(10);
+        number = 7;
+    }
+
+    function nestedNumber() public returns (uint256) {
+        uint256 currentNumber = counter.setNumber(number);
+        number++;
+        return currentNumber;
+    }
+}