Add skills for generating Tools
### Problem/Motivation
In https://www.drupal.org/project/ai_agents_experimental_collection there is an Claude Command to be able to generate agents and tools. Based on the vibe coding of the 100+ tools there, this works very well with Claude Code and Codex at least.
We should put this here instead as a generic skill, so anyone could use https://www.drupal.org/project/ai_best_practices or Vercel Skills to load it into their project.
This means that its open for any coding agent.
### Proposed resolution
* Create a Drush template and generate command
* Create one skill for creating tools under .agents/skills/{name}/SKILL.md, that uses the Drush command.
* Test it against the eval in AI Best Practices to confirm that it either works better in either advanced use cases or uses less tokens in easier user cases.
* Test it against gpt-5.2-mini in Github Co-Pilot to make sure it handles easier use cases. (baseline test with the worst popular harness with its free model)
### Alternatives considered
### AI usage (if applicable)
- [ ] **AI Assisted Issue:** This issue was generated with AI assistance, but was reviewed and refined by the creator.
- [ ] **AI Assisted Code:** This code was mainly generated by a human, with AI autocompleting or parts AI generated, but under full human supervision.
- [ ] **AI Generated Code:** This code was mainly generated by an AI with human guidance, and reviewed, tested, and refined by a human.
- [ ] **Vibe Coded:** This code was generated by an AI and has only been functionally tested.
issue