feat: Add institution details to Plaid items (#1816)

* feat: Add institution details to Plaid items

- Fetch and store institution URL, ID, and primary color for Plaid items
- Update PlaidItem model to retrieve and save institution metadata
- Add new method in Plaid provider to get institution details
- Update account logo view to use institution domain for logo generation

* Add institution domain method to Account model

- Extract institution domain logic from view to Account model
- Simplify logo view by using new institution_domain method
- Improve code reusability and separation of concerns

app/views/accounts/_account.html.erb

@@ -3,9 +3,7 @@
 <%= turbo_frame_tag dom_id(account) do %>
   <div class="p-4 flex items-center justify-between gap-3 group/account">
     <div class="flex items-center gap-3">
-      <div class="w-8 h-8 flex items-center justify-center rounded-full text-xs font-medium <%= account.is_active ? "bg-blue-500/10 text-blue-500" : "bg-gray-500/10 text-gray-500" %>">
-        <%= account.name[0].upcase %>
-      </div>
+      <%= render "accounts/logo", account: account, size: "md" %>
 
       <div>
         <% if account.scheduled_for_deletion? %>