feat(sdk-core): add EdDSA MPCv2 external signer types and stubs

Add CustomEddsaMPCv2SigningRound{1,2,3}GeneratingFunction interfaces to
baseTypes.ts, EddsaMPCv2Round{1,2,3} entries to the ShareType enum, the
corresponding optional fields on WalletSignTransactionOptions in iWallet.ts,
and a signEddsaMPCv2TssUsingExternalSigner stub in BaseTssUtils that
throws "Method not implemented." — scaffolding only, no dispatch logic.

Ticket: WCI-373
Session-Id: 999c38eb-ed17-45f3-be26-e1239a8405a4
Task-Id: 4e34455f-37e7-4f98-b35e-4326a225e7f4

Author: Marzooqa

modules/sdk-core/src/bitgo/utils/tss/baseTSSUtils.ts

@@ -15,6 +15,9 @@ import {
   CreateBitGoKeychainParamsBase,
   CreateKeychainParamsBase,
   CustomCommitmentGeneratingFunction,
+  CustomEddsaMPCv2SigningRound1GeneratingFunction,
+  CustomEddsaMPCv2SigningRound2GeneratingFunction,
+  CustomEddsaMPCv2SigningRound3GeneratingFunction,
   CustomGShareGeneratingFunction,
   CustomKShareGeneratingFunction,
   CustomMPCv2SigningRound1GeneratingFunction,
@@ -288,6 +291,16 @@ export default class BaseTssUtils<KeyShare> extends MpcUtils implements ITssUtil
     throw new Error('Method not implemented.');
   }
 
+  signEddsaMPCv2TssUsingExternalSigner(
+    params: TSSParams | TSSParamsForMessage,
+    externalSignerEddsaMPCv2SigningRound1Generator: CustomEddsaMPCv2SigningRound1GeneratingFunction,
+    externalSignerEddsaMPCv2SigningRound2Generator: CustomEddsaMPCv2SigningRound2GeneratingFunction,
+    externalSignerEddsaMPCv2SigningRound3Generator: CustomEddsaMPCv2SigningRound3GeneratingFunction,
+    requestType?: RequestType
+  ): Promise<TxRequest> {
+    throw new Error('Method not implemented.');
+  }
+
   /**
    * Create an Commitment (User to BitGo) share from an unsigned transaction and private user signing material
    * EDDSA only

modules/sdk-core/src/bitgo/utils/tss/baseTypes.ts

@@ -92,6 +92,9 @@ export enum ShareType {
   MPCv2Round1 = 'MPCv2Round1',
   MPCv2Round2 = 'MPCv2Round2',
   MPCv2Round3 = 'MPCv2Round3',
+  EddsaMPCv2Round1 = 'EddsaMPCv2Round1',
+  EddsaMPCv2Round2 = 'EddsaMPCv2Round2',
+  EddsaMPCv2Round3 = 'EddsaMPCv2Round3',
 }
 
 export enum MPCType {
@@ -189,6 +192,36 @@ export interface CustomMPCv2SigningRound3GeneratingFunction {
   }>;
 }
 
+export interface CustomEddsaMPCv2SigningRound1GeneratingFunction {
+  (params: { txRequest: TxRequest }): Promise<{
+    signatureShareRound1: SignatureShareRecord;
+    encryptedRound1Session: string;
+    userGpgPubKey: string;
+    encryptedUserGpgPrvKey: string;
+  }>;
+}
+
+export interface CustomEddsaMPCv2SigningRound2GeneratingFunction {
+  (params: {
+    txRequest: TxRequest;
+    bitgoPublicGpgKey: string;
+    encryptedUserGpgPrvKey: string;
+    encryptedRound1Session: string;
+  }): Promise<{
+    signatureShareRound2: SignatureShareRecord;
+    encryptedRound2Session: string;
+  }>;
+}
+
+export interface CustomEddsaMPCv2SigningRound3GeneratingFunction {
+  (params: {
+    txRequest: TxRequest;
+    bitgoPublicGpgKey: string;
+    encryptedUserGpgPrvKey: string;
+    encryptedRound2Session: string;
+  }): Promise<{ signatureShareRound3: SignatureShareRecord }>;
+}
+
 export enum TokenType {
   ERC721 = 'ERC721',
   ERC1155 = 'ERC1155',

modules/sdk-core/src/bitgo/wallet/iWallet.ts

@@ -18,6 +18,9 @@ import { IGoStakingWallet, IStakingWallet } from '../staking';
 import { ITradingAccount } from '../trading';
 import {
   CustomCommitmentGeneratingFunction,
+  CustomEddsaMPCv2SigningRound1GeneratingFunction,
+  CustomEddsaMPCv2SigningRound2GeneratingFunction,
+  CustomEddsaMPCv2SigningRound3GeneratingFunction,
   CustomGShareGeneratingFunction,
   CustomKShareGeneratingFunction,
   CustomMPCv2SigningRound1GeneratingFunction,
@@ -323,6 +326,9 @@ export interface WalletSignTransactionOptions extends WalletSignBaseOptions {
   customMPCv2SigningRound1GenerationFunction?: CustomMPCv2SigningRound1GeneratingFunction;
   customMPCv2SigningRound2GenerationFunction?: CustomMPCv2SigningRound2GeneratingFunction;
   customMPCv2SigningRound3GenerationFunction?: CustomMPCv2SigningRound3GeneratingFunction;
+  customEddsaMPCv2SigningRound1GenerationFunction?: CustomEddsaMPCv2SigningRound1GeneratingFunction;
+  customEddsaMPCv2SigningRound2GenerationFunction?: CustomEddsaMPCv2SigningRound2GeneratingFunction;
+  customEddsaMPCv2SigningRound3GenerationFunction?: CustomEddsaMPCv2SigningRound3GeneratingFunction;
   apiVersion?: ApiVersion;
   multisigTypeVersion?: 'MPCv2';
   walletPassphrase?: string;