Extract registry types into workspace package (#5840)

Extracts ComfyUI registry types into a dedicated workspace package for
better modularity.

- **What**: Created `@comfyorg/registry-types` package to house
generated type definitions
- **Breaking**: None - maintains backward compatibility through
re-exports at original path
- **Dependencies**: Added `@comfyorg/registry-types` as workspace
dependency

Is this the right granularity for package extraction, or should registry
types be part of a larger shared package?

PR split into two tiny diffs:
- [Part
one](https://github.com/Comfy-Org/ComfyUI_frontend/pull/5840/files/f8d3d2fa014aa4215e99d3ea93c1ebcabd6246d6)
- [Part
two](https://github.com/Comfy-Org/ComfyUI_frontend/pull/5840/files/f8d3d2fa014aa4215e99d3ea93c1ebcabd6246d6..c48ca843366c86a5d2214c036dcd9b24128a970a)

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-5840-Extract-registry-types-into-workspace-package-27c6d73d365081dbb824d680ce739316)
by [Unito](https://www.unito.io)

Author: webfiltered

knip.config.ts

@@ -20,6 +20,7 @@ const config: KnipConfig = {
       project: ['src/**/*.{js,ts}', '*.{js,ts,mts}']
     },
     'packages/registry-types': {
+      entry: ['src/comfyRegistryTypes.ts'],
       project: ['src/**/*.{js,ts}']
     }
   },