[Proposal] Enhance transaction import functionality with new Transaction type and type annotations (#4720)

* Enhance transaction import functionality with new Transaction type and type annotations

* release notes

* fixes for PR

* move transaction type as requested by @MatissJanis

* type importTransaction return value

---------

Co-authored-by: Matiss Janis Aboltins <matiss@mja.lv>

packages/api/methods.ts

@@ -1,5 +1,6 @@
 // @ts-strict-ignore
 import type { Handlers } from 'loot-core/types/handlers';
+import type { ImportTransactionEntity } from 'loot-core/types/models/import-transaction';
 
 import * as injected from './injected';
 
@@ -98,8 +99,8 @@ export interface ImportTransactionsOpts {
 }
 
 export function importTransactions(
-  accountId,
-  transactions,
+  accountId: string,
+  transactions: ImportTransactionEntity[],
   opts: ImportTransactionsOpts = {
     defaultCleared: true,
   },