feat(crate): init soar-dl crate

[QaidVoid]

Summary by CodeRabbit

• New Features

  • Major downloader overhaul: resumable downloads with progress events, overwrite modes, auto filename detection, optional archive extraction, ELF executable handling, and parallel OCI layer downloads.
  • Expanded platform support: native GitHub, GitLab and OCI release/asset workflows with filtering and interactive selection.
  • CLI/installer unified progress model for consistent progress reporting.

• Chores

  • Workspace/manifest reorganized and release profile optimized; dependency/layout updates and new centralized HTTP client and config handling.