✨ feat: add commit_message and bdd_testing skills

- Create commit_message skill with Gitmoji validation and templates
- Update bdd_testing skill to match validated BDD implementation
- Add comprehensive documentation and validation scripts
- Ensure all skills follow AGENTS.md conventions

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

.vibe/skills/bdd_testing/scripts/example.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+# Example script for bdd-testing skill
+
+set -e
+
+echo "This is an example script for the bdd-testing skill"
+echo "Replace this with your actual script logic"
+
+# Your script implementation goes here
+# Example:
+# echo "Processing..."
+# [command] [arguments]