GraphQL parsing errors could have a location

[pcarrier]

Description

When running a composition and one of the schemas does not parse successfully, a location (including ideally a reference to the schema file) could be displayed.

Repro where this is missing:

pcarrier@cat ~/repro> cupa *
--- 8< --- 8< --- demo.graphql --- 8< --- 8< ---
"Demo"
extend type Demo { id: ID! }
--- 8< --- 8< --- supergraph.yaml --- 8< --- 8< ---
subgraphs:
  demo:
    routing_url: undefined
    schema:
      file: ./demo.graphql
--- >8 --- >8 --- >8 --- >8 --- >8 ---
pcarrier@cat ~/repro> ~/.rover/bin/rover supergraph compose --config supergraph.yaml
error[E029]: Encountered 1 build error while trying to build a supergraph.

Caused by:
    Encountered 1 build error while trying to build the supergraph.
    UNKNOWN: Syntax Error: Unexpected Name "extend".

        The subgraph schemas you provided are incompatible with each other. See https://www.apollographql.com/docs/federation/errors/ for more information on resolving build errors.

[EverlastingBugstopper]

this would be great to have! this would require changes to apollo_federation_types::build::BuildError and the JS interop code.