Add Scowld by @apoorvdarshan

[apoorvdarshan]

Add a project

1. Project URL: https://github.com/apoorvdarshan/scowld
2. Updated contents.json instead of README
3. One project per pull request
4. Screenshot included
5. Avoided “iOS” and “open-source” in the description
6. Used the requested commit-title format
7. Used the approved entry format

Validation

• contents.json parses successfully
• JSON Schema validation passes
• Category validation passes
• The catalog generator includes Scowld in README, APPSTORE, and LATEST output
• App Store and screenshot URLs resolve