Use proper names when referencing indexer abstractions

[ra0x3]

• We need to go throughout the codebase and rename things for clarity

• These things include routes, migrations, table fields, variables, etc...everything

• Definitions

  • Indexer: an abstraction that takes Fuel-VM data and produces indices
  • Indexer service: A service that runs one or more indexers
  • Executors: async tasks run by indexers
  • Indices: data produced by an indexer

• Everywhere we're referencing "index" we need to most likely replace with "indexer"

  • If we don't do this, we're creating confusion, as an "index" is the resultant data produced by an "indexer"

• This will most likely require migrations for name changes to tables and such

[deekerno]

@ra0x3 What do you think about adding a glossary to our book as part of the documentation cleanup for this milestone? I feel that it may be helpful to have a page to refer users (and perhaps ourselves) to when they have questions about the terminology.

[ra0x3]

@deekerno I think that would be super helpful. Like a section “Glossary” in the SUMMARY. It would be small for now but I think that’s fine

[deekerno]

@ra0x3 Word. I'm finishing up the first pass of the documentation cleanup, so I'll make a quick page to knock it out as well as update the terminology in the book itself. 👌🏽