feat: Implement video workflow repository and related services

- Added videoWorkflowRepository with methods to manage video and user interactions.
- Introduced catalog_mapper for converting database models to protobuf representations.
- Created domain_helpers for normalizing domain and ad format values.
- Defined service interfaces for payment, account, notification, domain, ad template, player config, video, and user management.
- Implemented OAuth helpers for generating state and caching keys.
- Developed payment_proto_helpers for mapping payment-related models to protobuf.
- Added service policy helpers to enforce plan requirements and user permissions.
- Created user_mapper for converting user payloads to protobuf format.
- Implemented value_helpers for handling various value conversions and nil checks.
- Developed video_helpers for normalizing video statuses and managing storage types.
- Created video_mapper for mapping video models to protobuf format.
- Implemented render workflow for managing video creation and job processing.

internal/service/usage_helpers.go

@@ -3,7 +3,6 @@ package service
 import (
 	"context"
 
-	"gorm.io/gorm"
 	"stream.api/internal/database/model"
 	"stream.api/pkg/logger"
 )
@@ -14,9 +13,9 @@ type usagePayload struct {
 	TotalStorage int64  `json:"total_storage"`
 }
 
-func loadUsage(ctx context.Context, db *gorm.DB, l logger.Logger, user *model.User) (*usagePayload, error) {
-	var totalVideos int64
-	if err := db.WithContext(ctx).Model(&model.Video{}).Where("user_id = ?", user.ID).Count(&totalVideos).Error; err != nil {
+func loadUsage(ctx context.Context, videoRepo VideoRepository, l logger.Logger, user *model.User) (*usagePayload, error) {
+	totalVideos, err := videoRepo.CountByUser(ctx, user.ID)
+	if err != nil {
 		l.Error("Failed to count user videos", "error", err, "user_id", user.ID)
 		return nil, err
 	}