Set supportedFeatures appropriately when calling Supergraph.build().

[sachindshinde]

Router supports the authenticated v0.1 spec and the requiresScopes v0.1 spec, but these aren't included in the default specs used by Supergraph.build() (i.e. DEFAULT_SUPPORTED_SUPERGRAPH_FEATURES), so usages of these specs cause errors.

This PR changes the supportedFeatures passed to Supergraph.build() to include 'https://specs.apollo.dev/authenticated/v0.1' and 'https://specs.apollo.dev/requiresScopes/v0.1' in addition to the default specs.

[sachindshinde]

@trevor-scheer @clenfest For some reason, we're getting this error while compiling v8.

info: (cargo) | error[E0080]: evaluation of constant value failed
info: (cargo) |     --> /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/v8-0.60.1/src/isolate.rs:1724:3
info: (cargo) |      |
info: (cargo) | 1724 |   assert!(size_of::<TypeId>() == size_of::<u64>());
info: (cargo) |      |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the evaluated program panicked at 'assertion failed: size_of::<TypeId>() == size_of::<u64>()', /root/.cargo/registry/src/index.crates.io-6f17d22bba15001f/v8-0.60.1/src/isolate.rs:1724:3
info: (cargo) |      |
info: (cargo) |      = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)
info: (cargo) | 
info: (cargo) | For more information about this error, try `rustc --explain E0080`.
info: (cargo) | error: could not compile `v8` (lib) due to previous error
info: (cargo) | warning: build failed, waiting for other jobs to finish...
info: (cargo) | error: could not compile `v8` (lib) due to previous error
Error: 'cargo clippy -- -D warnings' failed with exit status: 101.

Exited with code exit status 1

Have any of y'all seen this before?

[Geal]

this is likely the same issue apollographql/router#3684

[Geal]

@sachindshinde the v8 build error is fixed now with #404

[clenfest]

Same as in fedutil-libs. I think we'd always just want the latest, right?

[sachindshinde]

@clenfest Presumably if we have multiple versions for a given identity (e.g. v0.1 and v0.2), we'd want all of them instead of the latest. (Or at least, we'd want Supergraph.build() to be able to parse older versions to enable in-place upgrades.) There's not a public accessor for FeaturesDefinitions._definitions unfortunately, but we have FeatureDefinitions.versions(), so I've updated the PR to use that.