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/accounts/index/_account_groups.erb

@@ -0,0 +1,17 @@
+<%# locals: (accounts:) %>
+
+<% accounts.group_by(&:accountable_type).sort_by { |group, _| group }.each do |group, accounts| %>
+  <div class="bg-gray-25 p-1 rounded-xl">
+    <div class="flex items-center px-4 py-2 text-xs font-medium text-gray-500">
+      <p><%= to_accountable_title(Accountable.from_type(group)) %></p>
+      <span class="text-gray-400 mx-2">&middot;</span>
+      <p><%= accounts.count %></p>
+      <p class="ml-auto"><%= totals_by_currency(collection: accounts, money_method: :balance_money) %></p>
+    </div>
+    <div class="bg-white">
+      <% accounts.each do |account| %>
+        <%= render account %>
+      <% end %>
+    </div>
+  </div>
+<% end %>