feat: add Plaid transaction handling and async queue processing

- introduced new migration to add Cursor column to AccountMetadata.
- updated AppDbContext model snapshot to reflect changes in the database schema.
- implemented async queue processing with ChannelAsyncQueue and AsyncQueueHostedService.
- created Plaid transaction handlers for added, modified, and removed transactions.
- developed PlaidTransactionService and PlaidTransactionSyncer for syncing transactions.
- added SyncUpdatesProcessor to handle sync updates from Plaid.
- updated tests to accommodate changes in institution and account metadata handling.

src/FiscalOS.AppHost/FiscalOS.AppHost.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Aspire.AppHost.Sdk/13.1.1">
+<Project Sdk="Aspire.AppHost.Sdk/13.1.2">
 
   <ItemGroup>
     <ProjectReference Include="..\FiscalOS.API\FiscalOS.API.csproj" />