feat: model total credits (#30727)

Co-authored-by: CodingOnStar <hanxujiang@dify.ai>
Co-authored-by: Stephen Zhou <38493346+hyoban@users.noreply.github.com>

web/models/common.ts

@@ -142,6 +142,9 @@ export type IWorkspace = {
 export type ICurrentWorkspace = Omit<IWorkspace, 'current'> & {
   role: 'owner' | 'admin' | 'editor' | 'dataset_operator' | 'normal'
   providers: Provider[]
+  trial_credits: number
+  trial_credits_used: number
+  next_credit_reset_date: number
   trial_end_reason?: string
   custom_config?: {
     remove_webapp_brand?: boolean