chore: Various ncd-report enhancements

[rsenden]

feat: `fcli license ncd-report *`: Add dormant tracking across contributors and repositories, include dormant counts in `summary.txt`, and generate top-level `repositories.csv` with dormant and raw count fields

feat: `fcli license ncd-report get-summary`: New command for displaying report summary from existing NCD report

feat: `fcli license ncd-report list-repositories`: New command (alias `lsr`) to list repositories with status, dormant flag, raw commit/contributor counts, and source report metadata for federated reports

feat: `fcli license ncd-report validate-sources`: New command to validate & introspect sources defined in NCD report configuration file

feat: `fcli license ncd-report list-contributors`: Include `dormant` status in default table output