[CI] Extract snippets from CPU category in GitHub configuration (#31662)
### Details:
- Move `src/common/snippets` from 'category: CPU' to separate 'category:
snippets' in `labeler.yml`
- Add new 'snippets' component in `components.yml` with CPU
cross-validation
This allows for more granular labeling and component tracking
### Tickets:
- N/A