feat: add bech32 precompile interface

src/interfaces/precompiles/IBech32.sol

@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: MIT
+pragma solidity >=0.8.17;
+
+/// @dev The IBech32 contract's address.
+address constant BECH32_PRECOMPILE_ADDRESS = 0x0000000000000000000000000000000000000400;
+
+IBech32 constant BECH32_CONTRACT = IBech32(BECH32_PRECOMPILE_ADDRESS);
+
+/// @author ExocoreNetwork
+/// @title Bech32 Precompiled Contract
+/// @dev This contract can be used by Solidity devs to convert from `string bech32Addr` to
+///      `address 0xAddr` and vice versa. The bech32-prefix used is the chain's prefix, via
+///      `sdk.Config#SetBech32PrefixForAccount`.
+/// @custom:address 0x0000000000000000000000000000000000000400
+interface IBech32 {
+
+    /// @dev Defines a method for converting a hex formatted address to bech32.
+    /// @param addr The hex address to be converted.
+    /// @param prefix The human readable prefix (HRP) of the bech32 address.
+    /// @return bech32Address The address in bech32 format.
+    function hexToBech32(address addr, string memory prefix) external view returns (string memory bech32Address);
+
+    /// @dev Defines a method for converting a bech32 formatted address to hex.
+    /// @param bech32Address The bech32 address to be converted.
+    /// @return addr The address in hex format.
+    function bech32ToHex(string memory bech32Address) external view returns (address addr);
+
+}