Fix ast parsing (#43)

* iterate over all sources

* fmt

* fixed parsing of associated contracts

* adapted proxy test

* fmt

---------

Co-authored-by: Stefan Effenberger <stefan.effenberger@chainsecurity.com>

Author: stiefn

.gitmodules

@@ -22,3 +22,6 @@
 [submodule "examples/tokenized-aave-v3/lib/tokenized-strategy-periphery"]
 	path = examples/tokenized-aave-v3/lib/tokenized-strategy-periphery
 	url = https://github.com/yearn/tokenized-strategy-periphery
+[submodule "tests/Contracts/lib/openzeppelin-contracts"]
+	path = tests/Contracts/lib/openzeppelin-contracts
+	url = https://github.com/openzeppelin/openzeppelin-contracts

lib/bytecode_verification/parse_json.rs

@@ -1,7 +1,7 @@
 pragma solidity ^0.8.12;
 
 import "forge-std/Script.sol";
-import "../src/TransparentUpgradeableProxy.sol";
+import "@openzeppelin/contracts/proxy/transparent/TransparentUpgradeableProxy.sol";
 import "../src/MyToken.sol";
 
 contract S is Script {