feat: Introduce MINTER_ROLE for minting control in CompliantFiatToken

- Added MINTER_ROLE constant to manage minting permissions.
- Updated mint function to restrict access to addresses with MINTER_ROLE, enhancing security and compliance.
- Granted MINTER_ROLE to the initial owner during contract deployment.

contracts/dbis/IDBISTypes.sol

@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.20;
+
+interface IDBISTypes {
+    enum FundsStatus { ON_LEDGER_FINAL, OFF_LEDGER_FINAL }
+    enum AssetClass { GRU_M00, GRU_M0, GRU_M1 }
+
+    struct MintAuth {
+        bytes32 messageId;
+        bytes32 isoType;
+        bytes32 isoHash;
+        bytes32 accountingRef;
+        FundsStatus fundsStatus;
+        bytes32 corridor;
+        AssetClass assetClass;
+        address[] recipients;
+        uint256[] amounts;
+        uint64 notBefore;
+        uint64 expiresAt;
+        uint256 chainId;
+        address verifyingContract;
+    }
+}