feat: payroll totals for company pays

[dmortal]

Adding totals to the overview

[Copilot]

Pull Request Overview

This PR adds footer totals to the company pays table in the payroll overview, providing a summary of all employee compensation data. The implementation includes adding key properties to table columns for proper footer rendering and displaying aggregated totals for gross pay, reimbursements, company taxes, benefits, and total company cost.

• Added footer totals functionality to the company pays table
• Added key properties to all table columns to support footer rendering
• Added localization strings for footer labels and descriptions

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 2 comments.

File	Description
src/i18n/en/Payroll.PayrollOverview.json	Added localization strings for footer totals label and description
src/components/Payroll/PayrollOverview/PayrollOverviewPresentation.tsx	Added key properties to table columns and implemented footer with aggregated totals

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