Add foundry support

Author: Amxx

.gitmodules

@@ -4,3 +4,6 @@
 [submodule "lib/@openzeppelin-contracts-upgradeable"]
 	path = lib/@openzeppelin-contracts-upgradeable
 	url = https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable.git
+[submodule "lib/forge-std"]
+	path = lib/forge-std
+	url = https://github.com/foundry-rs/forge-std.git

foundry.toml

@@ -0,0 +1,12 @@
+[profile.default]
+solc_version = '0.8.26'
+evm_version = 'cancun'
+src = 'contracts'
+out = 'out'
+libs = ['node_modules', 'lib']
+test = 'test'
+cache_path  = 'cache_forge'
+
+[fuzz]
+runs = 5000
+max_test_rejects = 150000

hardhat.config.js

@@ -3,7 +3,7 @@ const { argv } = require('yargs/yargs')()
   .options({
     compiler: {
       type: 'string',
-      default: '0.8.25',
+      default: '0.8.26',
     },
     hardfork: {
       type: 'string',

lib/forge-std

@@ -1,7 +1,5 @@
-# v5 (released)
 @openzeppelin/contracts@v5/=@openzeppelin/contracts/
 @openzeppelin/contracts-upgradeable@v5/=@openzeppelin/contracts-upgradeable/
 
-# Master (unreleased)
 @openzeppelin/contracts@master/=lib/@openzeppelin-contracts/contracts/
 @openzeppelin/contracts-upgradeable@master/=lib/@openzeppelin-contracts-upgradeable/contracts/