feat(cli): Add `inline` property to type references from properties in Fern definition with OpenAPI importer

[Swimburger]

Description

In the Fern definition, you can express your desire to inline a type from a property on a type:

types:
  RootType:
    properties:
      bar:
        type: InlineType
        inline: true
  InlineType:
    properties:
      ...

The IR generated from this Fern definition will store the desire to inline a type on the property and on the type declaration. For the type declaration, inline will only be true if all properties reference the type express desire to inline a type.

Changes Made

• Update Fern definition to allow inline true on properties referencing a type
• Update OpenAPI parser and OpenAPI IR to pass inline to the generated Fern definition
• Update Fern to IR generator to pass on inline to property and to type

Testing

• [x] Unit tests added/updated

Added more test definitions + evaluate existing test definition snapshots.

[github-actions[bot]]

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