feat: Add AI credit topup flow for Stripe (#12988)

Co-authored-by: Shivam Mishra <scm.mymail@gmail.com>
Co-authored-by: Pranav <pranav@chatwoot.com>

config/locales/en.yml

@@ -122,6 +122,11 @@ en:
       invalid_token: Invalid or expired MFA token
       invalid_credentials: Invalid credentials or verification code
       feature_unavailable: MFA feature is not available. Please configure encryption keys.
+    topup:
+      credits_required: Credits amount is required
+      invalid_credits: Invalid credits amount
+      invalid_option: Invalid topup option
+      plan_not_eligible: Top-ups are only available for paid plans. Please upgrade your plan first.
   profile:
     mfa:
       enabled: MFA enabled successfully

config/routes.rb

@@ -24,6 +24,7 @@ Rails.application.routes.draw do
     get '/app/accounts/:account_id/settings/inboxes/new/:inbox_id/agents', to: 'dashboard#index', as: 'app_instagram_inbox_agents'
     get '/app/accounts/:account_id/settings/inboxes/:inbox_id', to: 'dashboard#index', as: 'app_instagram_inbox_settings'
     get '/app/accounts/:account_id/settings/inboxes/:inbox_id', to: 'dashboard#index', as: 'app_email_inbox_settings'
+    get '/app/accounts/:account_id/settings/billing', to: 'dashboard#index', as: 'app_account_billing_settings'
 
     resource :widget, only: [:show]
     namespace :survey do
@@ -438,6 +439,7 @@ Rails.application.routes.draw do
               post :subscription
               get :limits
               post :toggle_deletion
+              post :topup_checkout
             end
           end
         end