feat: add image management functionality

- Implemented image folder repository with CRUD operations.
- Added image reference repository for managing image references to articles.
- Created image repository for handling image assets, including listing, inserting, updating, and deleting images.
- Introduced image usage repository to track storage usage and quotas for tenants.
- Added SQL queries for image assets, folders, references, and usage.
- Developed image handler for HTTP endpoints to manage images and folders.
- Created database migration scripts for image-related tables and structures.

server/internal/tenant/app/image_asset_task.go

@@ -0,0 +1,70 @@
+package app
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"github.com/geo-platform/tenant-api/internal/shared/messaging/rabbitmq"
+)
+
+const (
+	imageAssetTaskKindFinalizeUpload = "finalize_upload"
+	imageAssetTaskKindFinalizeDelete = "finalize_delete"
+)
+
+type imageAssetTaskEnvelope struct {
+	Kind     string `json:"kind"`
+	TenantID int64  `json:"tenant_id"`
+	AssetID  int64  `json:"asset_id"`
+}
+
+type ImageAssetTaskEnvelope struct {
+	Kind     string `json:"kind"`
+	TenantID int64  `json:"tenant_id"`
+	AssetID  int64  `json:"asset_id"`
+}
+
+func publishImageAssetTask(ctx context.Context, client *rabbitmq.Client, envelope imageAssetTaskEnvelope) error {
+	if client == nil {
+		return fmt.Errorf("rabbitmq client is not configured")
+	}
+
+	payload, err := json.Marshal(envelope)
+	if err != nil {
+		return fmt.Errorf("marshal image asset task envelope: %w", err)
+	}
+
+	if err := client.PublishImageAssetTask(ctx, payload); err != nil {
+		return fmt.Errorf("publish image asset task: %w", err)
+	}
+	return nil
+}
+
+func decodeImageAssetTaskEnvelope(payload []byte) (*imageAssetTaskEnvelope, error) {
+	var envelope imageAssetTaskEnvelope
+	if err := json.Unmarshal(payload, &envelope); err != nil {
+		return nil, fmt.Errorf("decode image asset task envelope: %w", err)
+	}
+	if envelope.TenantID <= 0 || envelope.AssetID <= 0 {
+		return nil, fmt.Errorf("image asset task envelope is incomplete")
+	}
+	switch envelope.Kind {
+	case imageAssetTaskKindFinalizeUpload, imageAssetTaskKindFinalizeDelete:
+	default:
+		return nil, fmt.Errorf("unsupported image asset task kind %q", envelope.Kind)
+	}
+	return &envelope, nil
+}
+
+func DecodeImageAssetTaskEnvelope(payload []byte) (*ImageAssetTaskEnvelope, error) {
+	envelope, err := decodeImageAssetTaskEnvelope(payload)
+	if err != nil {
+		return nil, err
+	}
+	return &ImageAssetTaskEnvelope{
+		Kind:     envelope.Kind,
+		TenantID: envelope.TenantID,
+		AssetID:  envelope.AssetID,
+	}, nil
+}