Add deployer contract to deploy grantfund, fund treasury and startNew…

…Distribution

src/grants/Deployer.sol

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+// SPDX-License-Identifier: MIT
+
+pragma solidity 0.8.18;
+
+import { IERC20 } from "@oz/token/ERC20/IERC20.sol";
+
+import { GrantFund } from "./GrantFund.sol";
+
+contract Deployer {
+
+    GrantFund public grantFund;
+
+    function deployGrantFund(address ajnaToken_, uint256 treasury_) public returns (GrantFund) {
+
+        IERC20(ajnaToken_).transferFrom(msg.sender, address(this), treasury_);
+
+        grantFund = new GrantFund(ajnaToken_);
+
+        IERC20(ajnaToken_).approve(address(grantFund), treasury_);
+
+        grantFund.fundTreasury(treasury_);
+
+        grantFund.startNewDistributionPeriod();
+        return grantFund;
+    }
+}

test/unit/Deployer.t.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.18;
+
+import { Test } from "@std/Test.sol";
+
+import { Deployer }  from "../../src/grants/Deployer.sol";
+import { GrantFund } from "../../src/grants/GrantFund.sol";
+import { TestAjnaToken } from "../utils/harness/TestAjnaToken.sol";
+
+contract DeployerTest is Test {
+
+    function testGrantFundDeployment() external {
+        address owner = makeAddr("owner");
+        vm.startPrank(owner);
+
+        uint256 treasury = 50_000_000 * 1e18;
+
+        TestAjnaToken ajnaToken = new TestAjnaToken();
+        ajnaToken.mint(owner, treasury);
+
+        Deployer deployer = new Deployer();
+        ajnaToken.approve(address(deployer), treasury);
+
+        GrantFund grantFund = deployer.deployGrantFund(address(ajnaToken), treasury);
+
+        assertEq(grantFund.getDistributionId(), 1);
+
+        (,,,uint256 fundAvailable,,) = grantFund.getDistributionPeriodInfo(1);
+
+        assertEq(grantFund.treasury(), treasury - fundAvailable);
+    }
+}