feat: add AI skills pack for Claude Code and OpenCode (#9728)

Co-authored-by: Rubén De la Torre Vico <ruben@prowler.com>
Co-authored-by: Adrián Jesús Peña Rodríguez <adrianjpr@gmail.com>
Co-authored-by: Pepe Fagoaga <pepe@prowler.com>

.gitignore

@@ -82,6 +82,9 @@ continue.json
 .continuerc
 .continuerc.json
 
+# AI Coding Assistants - OpenCode
+opencode.json
+
 # AI Coding Assistants - GitHub Copilot
 .copilot/
 .github/copilot/
@@ -152,3 +155,9 @@ CLAUDE.md
 
 # Compliance report
 *.pdf
+
+# AI Skills symlinks (generated by skills/setup.sh)
+.claude/skills
+.codex/skills
+.github/skills
+.gemini/skills