fix: permit, hash, bc structure

Author: angel10x

.gitmodules

@@ -16,3 +16,9 @@
 [submodule "lib/permit2"]
 	path = lib/permit2
 	url = https://github.com/uniswap/permit2
+[submodule "lib/v2-core"]
+	path = lib/v2-core
+	url = https://github.com/uniswap/v2-core
+[submodule "lib/v2-periphery"]
+	path = lib/v2-periphery
+	url = https://github.com/uniswap/v2-periphery

foundry.lock

@@ -11,9 +11,18 @@
       "rev": "fcbae5394ae8ad52d8e580a3477db99814b9d565"
     }
   },
+  "lib/permit2": {
+    "rev": "cc56ad0f3439c502c246fc5cfcc3db92bb8b7219"
+  },
   "lib/universal-router": {
     "rev": "41183d6eb154f0ab0e74a0e911a5ef9ea51fc4bd"
   },
+  "lib/v2-core": {
+    "tag": {
+      "name": "v1.0.1",
+      "rev": "4dd59067c76dea4a0e8e4bfdda41877a6b16dedc"
+    }
+  },
   "lib/v4-core": {
     "tag": {
       "name": "v4.0.0",

lib/v2-core

@@ -1,5 +1,7 @@
 @uniswap/v4-core/=lib/v4-core/
 @uniswap/v4-periphery/=lib/v4-periphery/
+@uniswap/v2-core/=lib/v2-core/
+@uniswap/v2-periphery/=lib/v2-periphery/
 @uniswap/permit2/=lib/permit2/
 @uniswap/universal-router/=lib/universal-router/
 @openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/