feat: Add foundry environment and CI

foundry/lib/forge-std/src/Test.sol

@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: MIT
+pragma solidity >=0.6.2 <0.9.0;
+
+pragma experimental ABIEncoderV2;
+
+// 💬 ABOUT
+// Forge Std's default Test.
+
+// 🧩 MODULES
+import {console} from "./console.sol";
+import {console2} from "./console2.sol";
+import {safeconsole} from "./safeconsole.sol";
+import {StdAssertions} from "./StdAssertions.sol";
+import {StdChains} from "./StdChains.sol";
+import {StdCheats} from "./StdCheats.sol";
+import {stdError} from "./StdError.sol";
+import {StdInvariant} from "./StdInvariant.sol";
+import {stdJson} from "./StdJson.sol";
+import {stdMath} from "./StdMath.sol";
+import {StdStorage, stdStorage} from "./StdStorage.sol";
+import {StdStyle} from "./StdStyle.sol";
+import {stdToml} from "./StdToml.sol";
+import {StdUtils} from "./StdUtils.sol";
+import {Vm} from "./Vm.sol";
+
+// 📦 BOILERPLATE
+import {TestBase} from "./Base.sol";
+
+// ⭐️ TEST
+abstract contract Test is TestBase, StdAssertions, StdChains, StdCheats, StdInvariant, StdUtils {
+    // Note: IS_TEST() must return true.
+    bool public IS_TEST = true;
+}