Make it easier to create a new custom cloud mapper by creating a mapper which the user can configure the mapping rules.

Scope

• Sandboxed JavaScript (ES2023) engine to allow users to write rules to map/filter/aggregate data
• Allow transformation of
  • topic
  • payload
• Basic filtering of messages
  • Only map selected messages based on either topic or payload values
• Allow users to use binary payloads (e.g. protobuf, cbor etc.)