move v6 into history

Author: spidemen

src/BlueprintV6.sol

@@ -5,7 +5,7 @@ import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
 import "@openzeppelin/contracts-upgradeable/proxy/utils/UUPSUpgradeable.sol";
 import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
 import "@openzeppelin/contracts-upgradeable/utils/cryptography/EIP712Upgradeable.sol";
-import "./Blueprint.sol";
+import "./history/BlueprintV6.sol";
 
 contract BlueprintV6 is Initializable, UUPSUpgradeable, OwnableUpgradeable, Blueprint {
     string public constant SIGNING_DOMAIN = "nation.fun";