Add ERC4626 standard property tests (#3792)

Co-authored-by: Hadrien Croubois <hadrien.croubois@gmail.com>

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "lib/forge-std"]
 	path = lib/forge-std
 	url = https://github.com/foundry-rs/forge-std
+[submodule "lib/erc4626-tests"]
+	path = lib/erc4626-tests
+	url = https://github.com/a16z/erc4626-tests.git

foundry.toml

@@ -1,2 +1,3 @@
 [fuzz]
 runs = 10000
+max_test_rejects = 100000

lib/erc4626-tests

@@ -0,0 +1 @@
+Subproject commit 8b1d7c2ac248c33c3506b1bff8321758943c5e11

test/token/ERC20/extensions/ERC4626.t.sol

@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+import "erc4626-tests/ERC4626.test.sol";
+
+import {ERC20Mock} from "../../../../contracts/mocks/ERC20Mock.sol";
+import {ERC4626Mock, IERC20Metadata} from "../../../../contracts/mocks/ERC4626Mock.sol";
+
+contract ERC4626StdTest is ERC4626Test {
+    function setUp() public override {
+        _underlying_ = address(new ERC20Mock("MockERC20", "MockERC20", address(this), 0));
+        _vault_ = address(new ERC4626Mock(IERC20Metadata(_underlying_), "MockERC4626", "MockERC4626"));
+        _delta_ = 0;
+        _vaultMayBeEmpty = false;
+        _unlimitedAmount = true;
+    }
+}