* feat: add Data Cloud Code Extension and Schema skills
Add two new skills for Salesforce Data Cloud:
- datacloud_code_extension: develop, test, and deploy Python code extensions
- datacloud_schema: retrieve DLO and DMO schema information via REST APIs
* modify the skills name from - datacloud_code_extension → developing-datacloud-code-extension and datacloud_schema → getting-datacloud-schema
* updated getting-datacloud-schema
* fix: address PR #180 review feedback and validation errors
- Wrap description values in double quotes in both SKILL.md files
- Trim developing-datacloud-code-extension SKILL.md from 755 to 319 lines
- Move README.md and quick-reference.md to references/ directory
- Remove "Claude Code" references and hardcoded local paths
- Use relative script paths (scripts/get_dlo_schema.py)
- Move getting-datacloud-schema docs/README.md to references/
---------
Co-authored-by: Hemant Singh Bisht <hsinghbisht@salesforce.com>
