feat(collaboration): add Cloud Patches for code sharing

[CalvinAllen]

Description

Add Cloud Patches functionality for sharing code changes with teammates before creating a pull request, enabling early feedback and collaboration.

Features

Create Cloud Patches From

• Working directory changes
• Staged changes
• Specific commits
• Stashes
• Branch comparisons

Sharing Options

• Public link (anyone with link)
• Organization members only
• Selected collaborators (by email/username)
• Expiration time setting

Patch Management

• View all created patches
• Delete patches
• Update patch with new changes
• View patch history
• Track who viewed/applied patch

Apply Patches

• Apply to working directory
• Apply to new branch
• Apply to existing branch
• Preview changes before applying
• Conflict resolution support

Cloud Patches View

• List of created patches
• Patch details:
  • Creation date
  • Description/title
  • Files changed
  • Sharing settings
  • View/apply statistics
• Quick actions (copy link, delete, update)

Self-Hosting Option

• Support for self-hosted storage (S3-compatible)
• On-premises deployment option
• Custom endpoint configuration

Configuration Options

• Default sharing setting
• Default expiration time
• Storage provider selection
• Auto-cleanup old patches

Acceptance Criteria

• Patches can be created from various sources
• Sharing options work correctly
• Patches can be applied cleanly
• Conflict resolution works
• Patch management UI functions properly
• Self-hosting option works