Refactor copywriting.json structure and content

Add copywriting skill with tools and description

Create copywriting.json

Create README.md

Create README.md

Create README.md

Create README.md

Create README.md

Create README.md

Delete skills/README.md agents/README.md stacks/README.md regions/README.md prompts/README.md docs directory

Create README.md

Delete skills directory

Delete agents directory

Delete agents/

Create README.md