Add Agent Skill for generating new Agent Skills

[kodurusravani34]

Added an Agent Skill that generates new Agent Skills from documentation or repository inputs. Helps simplify and scale skill creation.

[David-Bosnic]

This has no use case for webi and would just adds a markdown file that pretty much does nothing.
Refer to @detox-24 comment and mine after.
Closing

[detox-24]

Hello @kodurusravani34! Your idea is in the right place. Might I suggest some changes/improvements to this PR.

1. Wrong file structure

Agent Skills follow the agentskills.io spec, which requires a named directory containing a SKILL.md file, not a standalone .md file. The correct structure looks something close to this:

_skills/agent-skill-generator/
├── SKILL.md
└── references/        (optional but encouraged)
    └── REFERENCE.md

Your file was placed at agent-customization/agent-skill-generator.md which does not follow the spec. Skills in this repo live under _skills/. For a real example of what this looks like in practice, check out PR #1059 by @coolaj86, that is a good reference for structure and depth.

2. Missing YAML frontmatter

The SKILL.md must start with a YAML frontmatter block. At minimum:

---
name: agent-skill-generator
description: Generates a new Agent Skill for any tool by analyzing its documentation URL or repository. Use when asked to create or scaffold a new Agent Skill.
---

3. Add a verification step

Issue #1056 specifically calls this out. Once the skill generates a new Agent Skill, there should be a way to confirm the output actually works, not just that it looks right. Even a short checklist would do: does the generated skill have valid frontmatter? Can an agent follow the instructions end to end? Does it cover both agent use and human-via-agent use?

@David-Bosnic, I think this one deserves a chance to update, thoughts?

[David-Bosnic]

Fair. I did shoot the gun.
@kodurusravani34
Open a new pr with a better description and follow @detox-24 suggestions.
A better understanding of what and why will help in the future when people look back into the PR
even though the preposed merge is small.