[Phase 3A]: Add visualization components for dashboard (feature/visualizations)

[Vaibosnikov]

This PR adds visualization components to the TestCraft dashboard (runner/web). Charts are implemented using Recharts and use local mock data for frontend development without backend integration.

Included:

• RunStatusChart (pie): passed/failed/skipped distribution
• RunTrendChart (line): daily run totals and pass/fail trends
• RunDurationChart (bar): execution duration per test/run
• EnvironmentChart (donut): runs per environment
• Updated DashboardPage to display charts

How to run locally:

cd runner/web
npm install
npm run dev
Open http://localhost:5173

Notes:

• Components use sampleRuns.json in src/mock for data. Backend integration will be done in feature/dashboard-integration.

[Vaibosnikov]

@Anshra-dev @dakshita-singh @Vaishnavitiwari10 FYI,

The dashboard has been integrated with charts and visualizations. Please refer the snapshot below for the charts. This is only running in the local dev