chore: add per-module code review process and tracking infra

Adapts the code-review procedure, folder layout, template, and tooling
from the sibling mxaccessgw repo to lmxopcua.

- REVIEW-PROCESS.md: per-module review workflow — a module is one src/
  or tests/ project (ZB.MOM.WW.OtOpcUa. prefix stripped); 10-category
  checklist; finding IDs/severities/statuses; re-review rules.
- code-reviews/_template/findings.md: per-module findings template.
- code-reviews/regen-readme.py: generates the cross-module README.md
  index from the per-module findings.md files; --check gates staleness
  and consistency.
- code-reviews/test_regen_readme.py: dependency-free generator tests.
- code-reviews/prompt.md: orchestration prompt for clearing the backlog.
- code-reviews/README.md: generated index (no modules reviewed yet).
- scripts/check-code-reviews-readme.ps1: CI / pre-commit check wrapper.

Adapted to this repo: ZB.MOM.WW.OtOpcUa module naming, OtOpcUa
conventions checklist (in-process GalaxyDriver + mxaccessgw,
contained-name vs tag-name, ACL at DriverNodeManager), single .NET
solution build/test commands, and the lmxopcua design docs.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

code-reviews/README.md

@@ -0,0 +1,25 @@
+# Code Reviews
+
+<!-- GENERATED FILE - do not edit by hand. Regenerate with: python code-reviews/regen-readme.py -->
+
+Cross-module code review index for the OtOpcUa server codebase (`lmxopcua`). The review process is defined in [../REVIEW-PROCESS.md](../REVIEW-PROCESS.md).
+
+Each module's `findings.md` is the source of truth; this file is generated from them by `regen-readme.py` and must not be edited by hand.
+
+## Module status
+
+| Module | Reviewer | Date | Commit | Status | Open | Total |
+|---|---|---|---|---|---|---|
+| _no modules reviewed yet_ |  |  |  |  |  |  |
+
+## Pending findings
+
+Findings with status `Open` or `In Progress`, ordered by severity.
+
+_No pending findings._
+
+## Closed findings
+
+Findings with status `Resolved`, `Won't Fix`, or `Deferred`.
+
+_No closed findings._