Feat: allow customtypes ref in arguments/main

[vaisshnavi7]

Description of changes: This PR allows the use of CustomType and RefType in arguments for custom operations in the @aws-amplify/data-schema package. The changes span across three main areas, building upon the work done in PRs #402 and #412 :

1. Updated CustomOperation.ts to accept CustomType and RefType in CustomArguments.
2. Modified bridge-types.ts to include CustomType and RefType in relevant interfaces.
3. Added type tests in CustomOperations.test-d.ts to verify the new functionality.
4. Improved type resolution logic in ClientCustomOperations.ts for new argument types.
5. Updated SchemaProcessor.ts to:

• Handle customType and ref arguments in custom queries and mutations.
• Generate separate GraphQL input types for non-scalar arguments.
• Ensure correct referencing of these input types in the generated GraphQL operations.
• Support nested custom types and combinations of scalar and non-scalar arguments.

Key Implementations:

• Allow custom types, nested types, and references in query/mutation arguments.
• Generate separate input types for non-scalar arguments in GraphQL schema.
• Correctly reference these input types in operation definitions.
• Handle both scalar and non-scalar arguments appropriately.
• Support nested custom types and complex argument structures.

Testing:

• Added new type tests in CustomOperations.test-d.ts
• Implemented client operation tests with mocked runtime behavior in custom-operations.ts for:
  • Custom queries with custom type arguments
  • Custom queries with ref arguments
  • Custom mutations with custom type arguments
  • Custom mutations with ref arguments- Updated test snapshots to reflect new schema generation behavior
• Deployed sample application to verify schema generation and successful deployment

These changes enhance the flexibility of schema definitions by allowing more complex argument structures in custom operations.
This PR replaces #387 and includes the same changes, but with a branch name that matches the required pattern for the preid build process.

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Latest commit: 2e81a9d

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

This PR includes changesets to release 1 package

Name	Type
@aws-amplify/data-schema	Minor

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