add yearn project

Author: daejunpark

.github/workflows/test.yml

@@ -19,6 +19,10 @@ jobs:
             dir: "openzeppelin-contracts"
             submodule: "lib/erc4626-tests"
             cmd: "forge test --mc ERC4626StdTest"
+          - repo: "yearn/yearn-vaults-v3"
+            dir: "yearn-vaults-v3"
+            submodule: "lib/erc4626-tests"
+            cmd: "forge test --mc VaultERC4626StdTest"
 
     steps:
       - name: Checkout current repository