Add MCP tools for R2 object operations (get, put, delete) using the
Cloudflare REST API for raw object content handling.

R2 Object Tools:

• r2_object_get: Download with native MCP image support, inline text,
  base64 for binary (10MB limit)
• r2_object_put: Upload with auto content-type detection via mime
  package (100MB limit)
• r2_object_delete: Single object deletion with proper error handling

R2 Bucket Tools Enhancements:

• Add locationHint for geographic region selection
• Add jurisdiction for regulatory compliance (EU, FedRAMP)
• Add storageClass for default storage class (Standard, InfrequentAccess)
• Add bucketJurisdiction param to get/delete operations