feat: add devqubit-divi adapter for Qoro Divi

[m2papierz]

Draft PR: devqubit-divi adapter (Divi backend/workflow tracking)

Related to:

• feat(adapters): Add support for Qoro Divi #51

Context

Divi generates and executes batches of OpenQASM2 circuits across multiple backend types (e.g. local simulators and cloud hardware/services). This PR is a draft placeholder to start the integration with devqubit-engine and make execution tracking visible early.

MVP scope (this PR)

• Introduce a devqubit-divi adapter that wraps Divi backends by intercepting
• Emit a ExecutionEnvelope (UEC-style) with the minimum useful snapshots:
  • DeviceSnapshot: backend/provider/type + SDK versions
  • ProgramSnapshot: label -> qasm manifest + stable QASM hashes
  • ExecutionSnapshot: timestamps, shots, job_id + sanitized options
  • ResultSnapshot: always attach raw results as an artifact; best-effort normalization to COUNTS / EXPECTATION when recognizable
• Support pending runs (envelope marked pending if results weren’t fetched yet) and failure envelopes with traceback.