Lunchflow integration (#259)

* First pass lunch flow

* Fixes

- Fix apikey not being saved properly due to provider no reload support
- Fix proper messages if we try to link existing accounts.

* Fix better error handling

* Filter existing transactions and skip duplicates

* FIX messaging

* Branding :)

* Fix XSS and linter

* FIX provider concern

- also fix code duplication

* FIX md5 digest

* Updated determine_sync_start_date to be account-aware

* Review fixes

* Broaden error catch to not crash UI

* Fix buttons styling

* FIX process account error handling

* FIX account cap and url parsing

* Lunch Flow brand

* Found orphan i18n strings

* Remove per conversation with @sokie

---------

Co-authored-by: Juan José Mata <juanjo.mata@gmail.com>

config/routes.rb

@@ -273,6 +273,17 @@ Rails.application.routes.draw do
     end
   end
 
+  resources :lunchflow_items, only: %i[index new create show edit update destroy] do
+    collection do
+      get :select_accounts
+      post :link_accounts
+    end
+
+    member do
+      post :sync
+    end
+  end
+
   namespace :webhooks do
     post "plaid"
     post "plaid_eu"