feat(tbank): add brokerage account summaries

src/tbank/brokerage-account.dto.ts

@@ -1,4 +1,10 @@
 import { ApiProperty } from '@nestjs/swagger';
+import { MoneyDto } from './portfolio.dto';
+
+export class PortfolioSummaryDto {
+  @ApiProperty({ type: MoneyDto, isArray: true })
+  totalsByCurrency: MoneyDto[];
+}
 
 export class BrokerageAccountDto {
   @ApiProperty()
@@ -20,4 +26,7 @@ export class BrokerageAccountDto {
 
   @ApiProperty({ type: String, nullable: true, format: 'date' })
   openedOn: string | null;
+
+  @ApiProperty({ type: PortfolioSummaryDto, nullable: true })
+  portfolioSummary?: PortfolioSummaryDto | null;
 }