feat: add EthKeyringWrapper for common Eth logic around KeyringV2 implementation

packages/keyring-api/CHANGELOG.md

@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Add `EthKeyringWrapper` abstract class for Ethereum-based `KeyringV2` implementations ([#404](https://github.com/MetaMask/accounts/pull/404))
+  - Provides common Ethereum signing method routing (`submitRequest`) for all Eth keyrings.
 - Add `KeyringWrapper` base class to adapt legacy keyrings to `KeyringV2` ([#398](https://github.com/MetaMask/accounts/pull/398))
 
 ## [21.3.0]

packages/keyring-api/package.json

@@ -46,6 +46,8 @@
     "test:watch": "jest --watch"
   },
   "dependencies": {
+    "@ethereumjs/tx": "^5.4.0",
+    "@metamask/eth-sig-util": "^8.2.0",
     "@metamask/keyring-utils": "workspace:^",
     "@metamask/superstruct": "^3.1.0",
     "@metamask/utils": "^11.1.0",

packages/keyring-api/src/eth/index.ts

@@ -3,3 +3,4 @@ export * from './erc4337';
 export * from './rpc';
 export * from './types';
 export * from './utils';
+export * from './v2';