Basic Plaid Integration (#1433)

* Basic plaid data model and linking

* Remove institutions, add plaid items

* Improve schema and Plaid provider

* Add webhook verification sketch

* Webhook verification

* Item accounts and balances sync setup

* Provide test encryption keys

* Fix test

* Only provide encryption keys in prod

* Try defining keys in test env

* Consolidate account sync logic

* Add back plaid account initialization

* Plaid transaction sync

* Sync UI overhaul for Plaid

* Add liability and investment syncing

* Handle investment webhooks and process current day holdings

* Remove logs

* Remove "all" period select for performance

* fix amount calc

* Remove todo comment

* Coming soon for investment historical data

* Document Plaid configuration

* Listen for holding updates

app/views/layouts/application.html.erb

@@ -9,6 +9,7 @@
     <%= stylesheet_link_tag "tailwind", "inter-font", "data-turbo-track": "reload" %>
     <%= stylesheet_link_tag "application", "data-turbo-track": "reload" %>
 
+    <%= javascript_include_tag "https://cdn.plaid.com/link/v2/stable/link-initialize.js" %>
     <%= combobox_style_tag %>
 
     <%= javascript_importmap_tags %>
@@ -30,9 +31,13 @@
     <%= render "impersonation_sessions/super_admin_bar" if Current.true_user&.super_admin? %>
     <%= render "impersonation_sessions/approval_bar" if Current.true_user&.impersonated_support_sessions&.initiated&.any? %>
 
-    <div class="fixed z-50 space-y-1 top-6 right-10">
-      <div id="notification-tray">
+    <div class="fixed z-50 bottom-6 left-6">
+      <div id="notification-tray" class="space-y-1">
         <%= render_flash_notifications %>
+
+        <% if Current.family&.syncing? %>
+          <%= render "shared/notification", id: "syncing-notification", type: :processing, message: t(".syncing") %>
+        <% end %>
       </div>
     </div>