fix: properly associate samples and packs with projects

Commit notes

## Issues Fixed:

1. **Legacy upload route now supports projectId** - The /uploads/chunked/initiate endpoint was missing projectId parameter - Now correctly passes projectId to createUploadSession and queue job - Also added folderPath support to legacy route for consistency

2. **Samples can now be moved between projects** - Added projectId to PATCH /:id endpoint - Added projectId to PATCH /:id/metadata endpoint - Added projectId to PATCH /batch endpoint for bulk moves - Added projectId to all sample response functions

3. **Sample packs can now be moved between projects** - Added projectId to PATCH /:id endpoint - Added projectId to pack response function

4. **API responses now include projectId** - Updated toSampleResponse() in samples.ts - Updated toFullSampleResponse() in samples.ts - Updated toSampleResponse() in library.ts - Updated toPackResponse() in sample-packs.ts

This ensures that samples and sample packs are correctly associated with workspace projects throughout the entire upload and management lifecycle.

Co-authored-by: armin.naimi <[email redacted]>