[STORY] As an Applet developer, I want to author Sensemaker adapter modules for my Resource types

[pospi]

• should be pluggable as a coordinator zome (so does not change the DnaHash)
• should be simple to implement as an #[hdk_extern] which returns typed Resource data by its EntryHash
  • care should be taken to support multiple Resource types per zome (which may require some indexing API call for disambiguation)
• need to define some way for the Sensemaker to dynamically pass the data format of the Resource
• ideally all of this can be wrapped up into an abstract reusable zome or API generator macro