add CCIPEncodingUtils contract and gethwrapper (#1429)

## Motivation
I encountered a scenario w/ RMN where offchain needs to abi.encode a
[struct](https://github.com/smartcontractkit/ccip/blob/fc50683640bcfd73f0074d791fbaf7cdb6b29c71/contracts/src/v0.8/ccip/rmn/RMNRemote.sol#L90:L97)
that is not included in any public contract functions (as input param or
return value) and so it is not a part of the ABI or the go wrapper.
Offchain is currently doing a manual encoding by re-defining the type,
which I usually try to avoid at all costs. In the past, we've used a
Utils contract ([ex
here](https://github.com/smartcontractkit/chainlink/blob/develop/contracts/src/v0.8/automation/AutomationCompatibleUtils.sol)
from automation) to expose all private structs in public functions so
that offchain components can use E2E type safety when encoding /
decoding.

## Solution
Create a `CCIPEncodingUtils` contract and accompanying gethwrapper

contracts/scripts/native_solc_compile_all_ccip

@@ -102,6 +102,10 @@ compileContract ccip/test/mocks/MockE2EUSDCTokenMessenger.sol
 compileContract ccip/test/mocks/MockE2EUSDCTransmitter.sol
 compileContract ccip/test/WETH9.sol
 
+
+# Encoding Utils
+compileContract ccip/CCIPEncodingUtils.sol
+
 # Customer contracts
 compileContract ccip/pools/USDC/USDCTokenPool.sol
 

contracts/src/v0.8/ccip/CCIPEncodingUtils.sol

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: BUSL-1.1
+pragma solidity 0.8.24;
+
+import {RMNRemote} from "./rmn/RMNRemote.sol";
+
+/// @dev this file exposes structs that are otherwise internal to the CCIP codebase
+/// doing this allows those structs to be encoded and decoded with type safety in offchain code
+/// and tests because generated wrappers are available
+contract CCIPEncodingUtils {
+  error DoNotDeploy();
+
+  constructor() {
+    revert DoNotDeploy();
+  }
+
+  /// @dev the RMN Report struct is used in integration / E2E tests
+  function _rmnReport(bytes32 rmnReportVersion, RMNRemote.Report memory rmnReport) external {}
+}

core/gethwrappers/ccip/generation/generated-wrapper-dependency-versions-do-not-edit.txt

@@ -5,6 +5,7 @@ burn_mint_token_pool_and_proxy: ../../../contracts/solc/v0.8.24/BurnMintTokenPoo
 burn_with_from_mint_token_pool: ../../../contracts/solc/v0.8.24/BurnWithFromMintTokenPool/BurnWithFromMintTokenPool.abi ../../../contracts/solc/v0.8.24/BurnWithFromMintTokenPool/BurnWithFromMintTokenPool.bin 6333d0314d0bd29e75ea5e05fe62a4516ade0c6db91c30b6f93645035db52ed8
 burn_with_from_mint_token_pool_and_proxy: ../../../contracts/solc/v0.8.24/BurnWithFromMintTokenPoolAndProxy/BurnWithFromMintTokenPoolAndProxy.abi ../../../contracts/solc/v0.8.24/BurnWithFromMintTokenPoolAndProxy/BurnWithFromMintTokenPoolAndProxy.bin 08ed1235dda921ce8841b26aa18d0c0f36db4884779dd7670857159801b6d597
 ccip_config: ../../../contracts/solc/v0.8.24/CCIPConfig/CCIPConfig.abi ../../../contracts/solc/v0.8.24/CCIPConfig/CCIPConfig.bin 93e3bceec6fff366e876f636001253f1d9c60b43e2c95484674f7ae245b302e6
+ccip_encoding_utils: ../../../contracts/solc/v0.8.24/CCIPEncodingUtils/CCIPEncodingUtils.abi ../../../contracts/solc/v0.8.24/CCIPEncodingUtils/CCIPEncodingUtils.bin 1d48b49fc0668c4f8c5e19a208cf4cae124a9a5c361e7900fbc35b97a62dd1bc
 ccip_reader_tester: ../../../contracts/solc/v0.8.24/CCIPReaderTester/CCIPReaderTester.abi ../../../contracts/solc/v0.8.24/CCIPReaderTester/CCIPReaderTester.bin 481d461f14c98308cd788b64be1151e92bac6f95ddd55eefc926296454316f13
 commit_store: ../../../contracts/solc/v0.8.24/CommitStore/CommitStore.abi ../../../contracts/solc/v0.8.24/CommitStore/CommitStore.bin 274d87db70b643e00ab0a7e7845bb4b791f3b613bfc87708d33fc5a8369e2a41
 commit_store_helper: ../../../contracts/solc/v0.8.24/CommitStoreHelper/CommitStoreHelper.abi ../../../contracts/solc/v0.8.24/CommitStoreHelper/CommitStoreHelper.bin f7128dcc2ee6dbcbc976288abcc16970ffb19b59412c5202ef6b259d2007f801

core/gethwrappers/ccip/go_generate.go

@@ -45,6 +45,9 @@ package ccip
 //go:generate go run ../generation/generate/wrap.go ../../../contracts/solc/v0.8.24/MockE2EUSDCTokenMessenger/MockE2EUSDCTokenMessenger.abi ../../../contracts/solc/v0.8.24/MockE2EUSDCTokenMessenger/MockE2EUSDCTokenMessenger.bin MockE2EUSDCTokenMessenger mock_usdc_token_messenger
 //go:generate go run ../generation/generate/wrap.go ../../../contracts/solc/v0.8.24/MockE2EUSDCTransmitter/MockE2EUSDCTransmitter.abi ../../../contracts/solc/v0.8.24/MockE2EUSDCTransmitter/MockE2EUSDCTransmitter.bin MockE2EUSDCTransmitter mock_usdc_token_transmitter
 
+// EncodingUtils
+//go:generate go run ../generation/generate/wrap.go ../../../contracts/solc/v0.8.24/CCIPEncodingUtils/CCIPEncodingUtils.abi ../../../contracts/solc/v0.8.24/CCIPEncodingUtils/CCIPEncodingUtils.bin EncodingUtils ccip_encoding_utils
+
 // To run these commands, you must either install docker, or the correct version
 // of abigen. The latter can be installed with these commands, at least on linux:
 //