Add .ai and .cicd git submodules for shared policies and workflows

Adds standard WAMP project infrastructure:

- .ai submodule (wamp-ai): AI policies and git hooks
  - AI_GUIDELINES.md (guidelines for AI assistants)
  - AI_POLICY.md (policy for human contributors using AI)
  - .githooks/commit-msg (enforces AI authorship disclosure)
  - .githooks/pre-push (prevents tag creation by AI)

- .cicd submodule (wamp-cicd): Shared CI/CD workflows
  - identifiers.yml (release type detection)
  - Reusable workflows for consistent CI/CD

- CLAUDE.md symlink → .ai/AI_GUIDELINES.md

- Git hooks configured: core.hooksPath = .ai/.githooks

This brings crossbar.io in line with autobahn-python, zlmdb, and
cfxdb, ensuring consistent AI collaboration policies and shared
CI/CD infrastructure across all WAMP projects.

Author: oberstet

.ai

@@ -0,0 +1,6 @@
+[submodule ".ai"]
+	path = .ai
+	url = https://github.com/wamp-proto/wamp-ai.git
+[submodule ".cicd"]
+	path = .cicd
+	url = https://github.com/wamp-proto/wamp-cicd.git

.cicd

@@ -0,0 +1 @@
+.ai/AI_GUIDELINES.md