fix: adjust system contracts directories (#270)

* updating etc/ path to contracts/

* fix fee_estimate_impersonating path

* fix rust format issue

---------

Co-authored-by: Henrique Scocco <henrique.scocco@openzeppelin.com>
Co-authored-by: Nicolas Villanueva <nicolasvillanueva@msn.com>

src/system_contracts.rs

@@ -130,7 +130,7 @@ pub fn playground(options: &Options) -> BaseSystemContracts {
             include_bytes!("deps/contracts/playground_batch.yul.zbin").to_vec()
         }
         Options::Local => read_zbin_bytecode(
-            "etc/system-contracts/bootloader/build/artifacts/playground_batch.yul.zbin",
+            "contracts/system-contracts/bootloader/build/artifacts/playground_batch.yul.zbin",
         ),
     };
 
@@ -153,7 +153,7 @@ pub fn fee_estimate_contracts(options: &Options) -> BaseSystemContracts {
             include_bytes!("deps/contracts/fee_estimate.yul.zbin").to_vec()
         }
         Options::Local => read_zbin_bytecode(
-            "etc/system-contracts/bootloader/build/artifacts/fee_estimate.yul.zbin",
+            "contracts/system-contracts/bootloader/build/artifacts/fee_estimate.yul.zbin",
         ),
     };
 
@@ -165,9 +165,12 @@ pub fn fee_estimate_impersonating_contracts(options: &Options) -> BaseSystemCont
         Options::BuiltIn | Options::BuiltInWithoutSecurity => {
             include_bytes!("deps/contracts/fee_estimate_impersonating.yul.zbin").to_vec()
         }
-        Options::Local =>
+        Options::Local => {
             // Account impersonating is not supported with the local contracts
-            read_zbin_bytecode("etc/system-contracts/bootloader/build/artifacts/fee_estimate.yul/fee_estimate.yul.zbin")
+            read_zbin_bytecode(
+                "contracts/system-contracts/bootloader/build/artifacts/fee_estimate.yul.zbin",
+            )
+        }
     };
 
     bsc_load_with_bootloader(bootloader_bytecode, options)