feat(prowler): chunk8 add the Azure base contract (#422)

[Christophe Melchior (Kakudou)]

Part of #422.

Chunk 8 of the Prowler injector stack: add the Azure base contract — the CHK008 base Azure provider: the BDD suite (behaviour, OCSF status / lifecycle logs / verbose diagnostics / OCSF capture fixtures), the contracts/azure.py Azure contract module, its registration in the registry / __init__ (Azure joins AWS as an executable contract), and the registry-expectations alignment across chk001, chk007 BDD and the chk006 unit.

Re-landed from feat/422-prowler-chk008-base-azure-provider (5603b0d..56db1f7): 7 source commits folded into 3 (H1: 219c4ee + 3 fixture-alignment folds; H2: 39e97a9 + 56db1f7; H3: 5a85974 — every cherry-pick applied clean, zero conflicts). Gate V (whole-branch tree vs source tip 56db1f7): byte-identical except (a) the 14 pyproject.toml version differences of the other injectors (base move to 3.260821.0; prowler/ untouched), (b) the 5 trap-analysis.md files excluded by standing call (4 carried from earlier chunks + the new chk008 one), and (c) one approved deviation — the pinned pyoaev version assert removed from prowler/tests/unit/chk006_executable_base/test_outputs_registry_runtime.py.

[codecov]

Codecov Report

❌ Patch coverage is 95.45455% with 1 line in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
prowler/prowler/contracts/azure.py	94.73%	1 Missing ⚠️

Additional details and impacted files

@@                             Coverage Diff                             @@
##           feat/422-prowler-injector-chk7-base-aws     #438      +/-   ##
===========================================================================
+ Coverage                                    84.84%   84.87%   +0.02%     
===========================================================================
  Files                                          187      188       +1     
  Lines                                         8079     8100      +21     
===========================================================================
+ Hits                                          6855     6875      +20     
- Misses                                        1224     1225       +1     

Files with missing lines	Coverage Δ
prowler/prowler/contracts/__init__.py	100.00% <100.00%> (ø)
prowler/prowler/contracts/registry.py	93.61% <100.00%> (+0.13%)	⬆️
prowler/prowler/contracts/azure.py	94.73% <94.73%> (ø)

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