[TASK] Making the modules extra customizable - FerretDB Module

[khatrivarun]

Objectives:

• The following feature flags to be provided:
  • Enable or Disable Internal TLS Certificates
  • Enable or Disable Deployment of UI Component
  • Enable or Disable PITR Backups
  • Enable or Disable Observability
• The following scaling options to be provided:
  • Small: 2 pod (no read replicas, 1 FerretDB Pod)
  • Medium: 3 pods (1 read replica, 1 FerretDB Pod)
  • Large: 4 pods (1 read replica, 2 FerretDB Pods)