feat: support single-component report format in group-violations

[AbdulRehaman08]

feat: Support single-component report format in group-violations

group-violations previously only accepted the output formats from report-all-violations ({ files: [...] } or { components: [...] }). Feeding the output from report-violations ({ component: "...", violations: [...] }) would throw an "Invalid violations report format" error.

Changes:

• detectReportFormat now recognizes the single-component shape ({ component, violations })
• Added convertSingleComponentToComponentFormat converter that wraps the single-component report into the multi-component format, reusing the existing convertComponentToFileFormat pipeline
• The component name is used as the replacement field to stay consistent with report-all-violations output
• Updated error message to list all three accepted formats

Files changed:

• format-converter.utils.ts — New format detection + converter function
• utils/index.ts — Export new converter
• group-violations.tool.ts — Handle single-component format in the conversion chain

Backward compatible — existing formats continue to work as before.