Ensure unique OperationName for each GraphQL query and mutation

This is preparation for GraphQL queries as named "stored procedures" - the frontend can use shorthand to refer to a

If we can set a unique title for each query and mutation, it means we can set the foundation for the following:

• Sending a shorthand and variables so that we save and cache queries a bit like stored procedures
• Define a SSOT for query contents to share between frontend and backend
• Allow greater visibility in our monitoring by grouping queries by name

Titles should be unique and present for each query and mutation. This can probably be done via a linter.

Possible solution

• Lint using https://github.com/apollographql/eslint-plugin-graphql <-- This appears to be stagnant.
• Lint using graphql-eslint's unique-operation-name rule