feat: Add player_configs feature and migrate user preferences

- Implemented player_configs table to store multiple player configurations per user.
- Migrated existing player settings from user_preferences to player_configs.
- Removed player-related columns from user_preferences.
- Added referral state fields to user for tracking referral rewards.
- Created migration scripts for database changes and data migration.
- Added test cases for app services and usage helpers.
- Introduced video job service interfaces and implementations.

internal/video/runtime/domain/job.go

@@ -17,6 +17,7 @@ type Job struct {
 	Status        JobStatus `json:"status" gorm:"type:varchar(32);index"`
 	Priority      int       `json:"priority" gorm:"default:0;index"`
 	UserID        string    `json:"user_id" gorm:"index"`
+	VideoID       string    `json:"video_id,omitempty"`
 	Name          string    `json:"name"`
 	TimeLimit     int64     `json:"time_limit"`
 	InputURL      string    `json:"input_url"`