docs(cookbook): complete Phase 2 with all remaining recipes

Add final 4 comprehensive recipes to complete Phase 2:

Cloud (2 recipes):
- Database Migration (3 methods: backup, replication, cross-region)
- Active-Active Setup (multi-region CRDB with conflict resolution)

Enterprise (2 recipes):
- Configure Database Replication (HA setup, failover, monitoring)
- Configure Redis ACLs (ACL rules, multi-tenant patterns)

Updated cookbook README with all recipe links.

Complete Phase 2 Statistics:
- Phase 1: 3 recipes (databases, support packages)
- Phase 2: 9 new recipes
- Total: 12 comprehensive recipes
- All with time estimates, prerequisites, examples, troubleshooting

Completes Phase 2 of #388

Author: joshrotenberg

docs/src/cookbook/README.md

@@ -24,8 +24,8 @@ New to redisctl? Start here:
 
 ### Operations
 - [Backup and Restore Workflow](cloud/backup-restore.md) - 10-15 minutes
-- Database Migration (coming soon)
-- Active-Active Setup (coming soon)
+- [Database Migration](cloud/database-migration.md) - 20-30 minutes
+- [Active-Active Setup](cloud/active-active-setup.md) - 30-45 minutes
 
 ## Redis Enterprise Recipes
 
@@ -34,13 +34,12 @@ New to redisctl? Start here:
 
 ### Operations
 - [Generate and Upload Support Package](enterprise/support-package.md) - 10 minutes
-- Configure Database Replication (coming soon)
-- Configure Redis ACLs (coming soon)
+- [Configure Database Replication](enterprise/configure-replication.md) - 10-15 minutes
+- [Configure Redis ACLs](enterprise/configure-redis-acls.md) - 10 minutes
 
 ### Cluster Management
 - [Cluster Health Check](enterprise/cluster-health.md) - 5 minutes
 - [Node Management](enterprise/node-management.md) - 10-15 minutes
-- Database Failover (coming soon)
 
 ## How to Use These Recipes