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/video_helpers.go

@@ -0,0 +1,56 @@
+package service
+
+import (
+	"net/url"
+	"strings"
+)
+
+func normalizeVideoStatusValue(value string) string {
+	switch strings.ToLower(strings.TrimSpace(value)) {
+	case "processing", "pending":
+		return "processing"
+	case "failed", "error":
+		return "failed"
+	default:
+		return "ready"
+	}
+}
+
+func normalizeVideoStatusFilter(value string) string {
+	trimmed := strings.TrimSpace(value)
+	if trimmed == "" || strings.EqualFold(trimmed, "all") {
+		return ""
+	}
+	return normalizeVideoStatusValue(trimmed)
+}
+
+func detectStorageType(rawURL string) string {
+	if shouldDeleteStoredObject(rawURL) {
+		return "S3"
+	}
+	return "WORKER"
+}
+
+func shouldDeleteStoredObject(rawURL string) bool {
+	trimmed := strings.TrimSpace(rawURL)
+	if trimmed == "" {
+		return false
+	}
+	parsed, err := url.Parse(trimmed)
+	if err != nil {
+		return !strings.HasPrefix(trimmed, "/")
+	}
+	return parsed.Scheme == "" && parsed.Host == "" && !strings.HasPrefix(trimmed, "/")
+}
+
+func extractObjectKey(rawURL string) string {
+	trimmed := strings.TrimSpace(rawURL)
+	if trimmed == "" {
+		return ""
+	}
+	parsed, err := url.Parse(trimmed)
+	if err != nil {
+		return trimmed
+	}
+	return strings.TrimPrefix(parsed.Path, "/")
+}