feat(internal): Implement initial multi-schema utilities

[kitten]

Related to #248

• Add support for new config format for multiple schemas
• Add utilities to load multiple schemas at the same time
• Pass through name from input config to introspection to output format to API

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 8523ccbb30fe342a9a8e08b8fa7df50675e470ed

The changes in this PR will be included in the next version bump.

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR