Add generated Protobuf types

[stevendborrelli]

Note: this requires a fix to the upstream repo before we can merge it, see stephenh/ts-proto#1216

Description of your changes

Add TypeScript Type Registry Support for Protobuf Type Detection

Summary

This PR enhances the SDK's ability to detect and work with protobuf types by enabling the outputTypeRegistry=true option in protoc-gen-ts_proto. This adds a $type property to all generated protobuf types, providing a reliable type identifier that simplifies type detection throughout the codebase.

Changes

1. Generated Protobuf Code

• Added typeRegistry.ts: Created the type registry file that provides the messageTypeRegistry Map and type definitions used by all generated protobuf code
• Updated protobuf generation: All protobuf types now include a $type property with their fully-qualified type name (e.g., "apiextensions.fn.proto.v1.Resource")
• Fixed type conversions: Updated fromPartial() methods in run_function.ts to use as unknown as for safer type casting when dealing with Object.entries()

2. Improved Type Detection in resource.ts

Before:

const isProtoResource =
  typeof source === 'object' &&
  source !== null &&
  'resource' in source &&
  typeof (source as { resource?: unknown }).resource === 'object' &&
  ('connectionDetails' in source || 'ready' in source);

const isProtoResource =
  typeof source === 'object' &&
  source !== null &&
  '$type' in source &&
  (source as { $type?: string }).$type === 'apiextensions.fn.proto.v1.Resource';

Benefits:

• More reliable - checks exact protobuf type identifier
• Simpler - single property check vs multiple heuristics
• More specific - distinguishes protobuf types from plain objects with similar properties
• More maintainable - doesn't rely on checking implementation details

Test Updates

Updated response.test.ts to expect the $type property in SchemaSelector objects:

expect(result.requirements?.schemas?.['xr-schema']).toEqual({
  $type: 'apiextensions.fn.proto.v1.SchemaSelector',
  apiVersion: 'example.org/v1',
  kind: 'MyResource',
});

I have:

• Read and followed Crossplane's contribution process.
• Added or updated unit tests for my change.

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